81701475

素因数分解:

$3^1\times 5^2\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{229}}^1$

素因数の和:380

約数の個数: 48

約数和(自身を含む): 139633920

約数和(自身を除く): 57932445

約数列:

[1, 3, 5, 15, 25, 67, 71, 75, 201, 213, 229, 335, 355, 687, 1005, 1065, 1145, 1675, 1775, 3435, 4757, 5025, 5325, 5725, 14271, 15343, 16259, 17175, 23785, 46029, 48777, 71355, 76715, 81295, 118925, 230145, 243885, 356775, 383575, 406475, 1089353, 1150725, 1219425, 3268059, 5446765, 16340295, 27233825, 81701475]

約数ペア:

[(1, 81701475), (3, 27233825), (5, 16340295), (15, 5446765), (25, 3268059), (67, 1219425), (71, 1150725), (75, 1089353), (201, 406475), (213, 383575), (229, 356775), (335, 243885), (355, 230145), (687, 118925), (1005, 81295), (1065, 76715), (1145, 71355), (1675, 48777), (1775, 46029), (3435, 23785), (4757, 17175), (5025, 16259), (5325, 15343), (5725, 14271)]