Conversely, we call C a multiple of A and B. When learning factors and multiples, primary school mathematics does not consider 0.
Multiplicative commutative law is the multiplication of two numbers, the position of the exchange factor, and their products are unchanged.
A×b=b×a is called commutative law.
definition
In primary school mathematics, two positive integers are multiplied, so both numbers are called factors of product, or divisors.
Definition of primary school mathematics: If a*b=c(a, B and C are all integers), then we call A and B factors of C. It should be noted that this relationship only holds if the dividend, divisor and quotient are integers and the remainder is zero. Conversely, we call C 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 authors do not require B≠0.