139944550

素因数分解:

$2^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{499}}^1$

素因数の和:661

約数の個数: 48

約数和(自身を含む): 267840000

約数和(自身を除く): 127895450

約数列:

[1, 2, 5, 10, 25, 50, 71, 79, 142, 158, 355, 395, 499, 710, 790, 998, 1775, 1975, 2495, 3550, 3950, 4990, 5609, 11218, 12475, 24950, 28045, 35429, 39421, 56090, 70858, 78842, 140225, 177145, 197105, 280450, 354290, 394210, 885725, 985525, 1771450, 1971050, 2798891, 5597782, 13994455, 27988910, 69972275, 139944550]

約数ペア:

[(1, 139944550), (2, 69972275), (5, 27988910), (10, 13994455), (25, 5597782), (50, 2798891), (71, 1971050), (79, 1771450), (142, 985525), (158, 885725), (355, 394210), (395, 354290), (499, 280450), (710, 197105), (790, 177145), (998, 140225), (1775, 78842), (1975, 70858), (2495, 56090), (3550, 39421), (3950, 35429), (4990, 28045), (5609, 24950), (11218, 12475)]