Divisor

https://en.wikipedia.org/wiki/Divisor

divisor factor multiple divisible by divisibility divisibility rule

A divisor or factor of an integer $n$ is an integer $m$ that may be multiplied by some integer $k$ to produce $n$, that is, $n = k\cdot m$. This implies that any $n$ has 1 and itself as factors, $n=n\cdot1$.

It can also be stated that $n$ is a multiple of $m$; and also of $k$.

An integer $n$ is divisible by another integer $m$ if $m$ is a divisor of $n$, which implies that dividing $n$ by $m$ leaves no remainder.