公こう約やく数すう

noun

common divisor; common factor

Mathematical term for a number that divides two or more integers without a remainder. Often used in the context of greatest common divisor (最大公約数).

• 12と18の公こう約やく数すうは1、2、3、6です。

  The common divisors of 12 and 18 are 1, 2, 3, and 6.

• 最さい大だい公こう約やく数すうを求もとめなさい。

  Find the greatest common divisor.