12的因数1,2,3,4,6,12,18的因数1,2,3,6,9,18,12和18的公因数1,2,3,6.4的倍数4,8,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68,72,76,80,84,88,92,96,100,6的倍数6,12,18,24,30,36,42,48,54,60,66,72,78,84,90,96,4和6的公倍数12,24,36,48,60,72,84,96