12919240

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{191}}^1$

素因数の和:310

約数の個数: 64

約数和(自身を含む): 31104000

約数和(自身を除く): 18184760

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 89, 95, 152, 178, 190, 191, 356, 380, 382, 445, 712, 760, 764, 890, 955, 1528, 1691, 1780, 1910, 3382, 3560, 3629, 3820, 6764, 7258, 7640, 8455, 13528, 14516, 16910, 16999, 18145, 29032, 33820, 33998, 36290, 67640, 67996, 72580, 84995, 135992, 145160, 169990, 322981, 339980, 645962, 679960, 1291924, 1614905, 2583848, 3229810, 6459620, 12919240]

約数ペア:

[(1, 12919240), (2, 6459620), (4, 3229810), (5, 2583848), (8, 1614905), (10, 1291924), (19, 679960), (20, 645962), (38, 339980), (40, 322981), (76, 169990), (89, 145160), (95, 135992), (152, 84995), (178, 72580), (190, 67996), (191, 67640), (356, 36290), (380, 33998), (382, 33820), (445, 29032), (712, 18145), (760, 16999), (764, 16910), (890, 14516), (955, 13528), (1528, 8455), (1691, 7640), (1780, 7258), (1910, 6764), (3382, 3820), (3560, 3629)]