Factor refers to the integer A divided by the integer B, and the quotient of b≠0 is exactly an integer without remainder, so B is the factor of A. In primary school mathematics, two positive integers are multiplied, so both numbers are called the factor of product, or the divisor.
Definition of primary school mathematics: If a*b=c, A, B and C are all integers, then A and B are all factors of C. It should be noted that this relationship only holds when the dividend, divisor and quotient are integers and the remainder is zero. Conversely, C is called a multiple of A and B. When learning factors and multiples, primary school mathematics does not consider 0.
In fact, factors are generally defined as integers: let a be an integer and b be a non-zero integer. If there is an integer Q that makes A=QB, then B is a factor of A, denoted as B | A ... but some do not require B≠0.
Relationship supplement:
1, and the research scope of factors and multiples is: non-zero natural numbers.
2. The relationship between factor and multiple is interdependent. No multiple, no factor, no factor, no multiple. Can only say who is who's factor, who is who's multiple. You can't say who is a factor and who is a multiple.
3. Discrimination between factor and multiple: In multiplication, product is multiple of multiplier, and multiplier is factor of product.