31399750

素因数分解:

$2^1\times 5^3\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:178

約数の個数: 64

約数和(自身を含む): 62674560

約数和(自身を除く): 31274810

約数列:

[1, 2, 5, 10, 25, 29, 50, 58, 61, 71, 122, 125, 142, 145, 250, 290, 305, 355, 610, 710, 725, 1450, 1525, 1769, 1775, 2059, 3050, 3538, 3550, 3625, 4118, 4331, 7250, 7625, 8662, 8845, 8875, 10295, 15250, 17690, 17750, 20590, 21655, 43310, 44225, 51475, 88450, 102950, 108275, 125599, 216550, 221125, 251198, 257375, 442250, 514750, 541375, 627995, 1082750, 1255990, 3139975, 6279950, 15699875, 31399750]

約数ペア:

[(1, 31399750), (2, 15699875), (5, 6279950), (10, 3139975), (25, 1255990), (29, 1082750), (50, 627995), (58, 541375), (61, 514750), (71, 442250), (122, 257375), (125, 251198), (142, 221125), (145, 216550), (250, 125599), (290, 108275), (305, 102950), (355, 88450), (610, 51475), (710, 44225), (725, 43310), (1450, 21655), (1525, 20590), (1769, 17750), (1775, 17690), (2059, 15250), (3050, 10295), (3538, 8875), (3550, 8845), (3625, 8662), (4118, 7625), (4331, 7250)]