公约数 Traditional form: 公約數 Pinyin (reading): gōngyuēshù Definitions: common factor common divisor Characters: 公 - fair, equitable; public; duke 约 - treaty, covenant, agreement 数 - count, number, several Traditional characters: 公 - fair, equitable; public; duke 約 - treaty, covenant, agreement 數 - count, number, several