Factor or divisor is a mathematical term. Definition: The quotient (b≠0) of an integer A divided by an integer B is exactly an integer with no remainder, so we say that B is a factor of A .. 0 is not a factor of 0.

There are infinite prime numbers, also called prime numbers. A prime number is defined as a natural number greater than 1, and there are no other factors except 1 and itself.

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1, and the composite number refers to the number in natural numbers that can be divisible by other numbers (except 0) except 1 and itself. In contrast, it is a prime number, and 1 is neither a prime number nor a composite number. The smallest composite number is 4. The perfect number and the number of blind dates are based on this.

2. Prime factor (prime factor or prime factor) refers to a prime number that can be divisible by a given positive integer in number theory. Except 1, two positive integers without other homogeneous factors are called coprime. Because 1 has no prime factor, 1 is coprime with any positive integer (including 1 itself). Factorization of positive integers can represent positive integers as a series of multiplications of prime factors, and prime factors can be represented by exponents if they are repeated.

3. A positive factor or positive divisor refers to a factor greater than 0 in an integer. For example, the positive factor of 12 is 1, 2,3,4,6, 12. The factor must be an integer, so the minimum positive factor of any integer is 1.

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