What are the common factors of 90 and 100, and what are the common factors of 180 and 90

The common factor has .

The common factor, also known as the "common divisor". It is an integer that is divisible by several integers at the same time. If an integer is a factor of several integers at the same time, the integer is called their "common factor"; The largest of the common factors is called the greatest common factor.

For any number of positive integers, 1 is always their common factor.

Given a number of integers, if there is a number(s) that is their common factor, then that number(s) is called their common factor. And the one that is the largest of all the common factors is called the greatest common factor of these integers.

The common divisor is the opposite of a common multiple, that is, it is both a divisor of a and a divisor of b, and the common divisor of 12 and 15 has 1,3, and the greatest common divisor is 3. For example, 30 and 40 have a common divisor of 1, 2, 5, 10, and the greatest common divisor is 10.

The common factor, also known as the common divisor. In the narrative of number theory, if n and d are both integers, and there is an integer c such that n = cd, then d is said to be a factor of n, or n is a multiple of d, denoted as d|n (pronounced d divisible by n). If d|a and d|b, let's say d is a common factor of a and b.

According to Pei Shu's theorem, for each pair of integers a and b, there is a common factor d, such that d=ax+by, where x and y are integers, and each common factor of a and b is divisible by this d. So the absolute value of d is called the greatest common factor.

The common factors of 90 and 100 are: (1,5,10,2) Analysis: Using the factorization method, then:

90=5x2x3x3

100=2x5x2x5

The common factors of 90 and 180 are . The common factor, also known as the "common divisor" of the manuscript. It is an integer that is divisible by several integers at the same time.

If an integer is a factor of several integers at the same time, the integer is called their "common factor"; The largest of the common factors is called the greatest common factor.

An integer is a collection of positive integers, zeros, and negative integers. The whole of an integer constitutes an integer set, and an integer set is a number key limb ring. In the integer system, zeros and positive integers are collectively referred to as natural numbers.

1、-2、-3、…, n, is a negative integer. then positive integers, zeros, and negative integers form an integer system. Integers do not include decimals and fractions.

The greatest common factor of 100 and 80 is 20, and the algorithm is:

Decompose the prime factors of the two numbers separately:

Find all common prime factors;

Multiply all the common prime factors, and the product is the greatest common factor of the two numbers, that is: 2 2 5 = 20.

The common factor of 90 and 180 is .

The fastest way is to find the factor of 90 directly, then the factor of 90 is the common factor of 90 and 180. According to the method of factoring prime factors, it is known that 180 = 2x2x3x3x5 and 90 = 2x3x3x5, so the greatest common factor of 180 and 90 is: 2x3x3x5 = 90.

The greatest common factor, also known as the greatest common divisor or greatest common factor, refers to the largest of the common divisors of two or more integers.

Because 90 and 180 are multiples, the least common multiple of 180 and 90 is 180. The common multiple of two or more integers is called their common multiple, and the smallest common multiple other than 0 is called the least common multiple of these integers. There are only the smallest multiples and no maximum, because the multiples of two numbers can be infinite.

The common factor, also known as the common divisor. In the narrative of number theory, if n and d are both integers, and there is an integer c such that n = cd, then d is a factor of n, or n is a multiple of d, denoted as d|n (pronounced d divisible by n). If d|a and d|b, let's say d is a common factor of a and b.

According to Pei Shu's theorem, for each pair of integers a and b, there is a common factor d, such that d=ax+by, where x and y are integers, and each common factor of a and b is divisible by this d. The absolute value of d is then called the greatest common factor. To find the greatest common factor of several integers, just multiply all of their common prime factors, and the resulting product is their greatest common factor.

Liquid respect. <>Calculation method:

1. Multiples relationship: If the larger number is a multiple of the smaller number, then the smaller number is the greatest common factor of the two numbers.

2. Coprime relationship: Two numbers with a common factor of only 1 are called coprime numbers. For example, 5 and 7 are coprime numbers.

and 90, the greatest common factor is 10.

To find the greatest common factor of and 90, we can start by finding the prime factor factorization of each number to decompose Chi Kaipei:

100 = 2^2 x 5^2

140 = 2^2 x 5 x 7

90 = 2 x 3^2 x 5

Next, we identify the common factors for all three numbers. These are the factors that appear in each of the prime factoring fractional solutions with the lowest exponent. Sun Staring.

The common factor of all three prime factor factorization is:

2 2 and 5

So the greatest common factor of and 90 is 2 2 x 5, which is equal to 20.

Answer: 100 = 10 * 10 * 1, 140 = 1 * 2 * 7 * 10, 90 = 1 * 10 * 9

It can be seen that Hu is 100, 140, and the maximum public matching mining factor of 90 is 10.