1In mathematics, a factor: a number that divides another number without remainder, or a component that multiplies with others to give the original expression (as in factorization).
12の因数は1、2、3、4、6、12だ。
The factors of 12 are 1, 2, 3, 4, 6, and 12.
多項式を因数に分解して計算を簡単にする。
Factor the polynomial to simplify the calculation.
素数は1と自分自身以外に因数を持たない。
A prime number has no factors other than 1 and itself.