205011640

素因数分解:

$2^3\times 5^1\times {\mathrm{1709}}^1\times {\mathrm{2999}}^1$

素因数の和:4719

約数の個数: 32

約数和(自身を含む): 461700000

約数和(自身を除く): 256688360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1709, 2999, 3418, 5998, 6836, 8545, 11996, 13672, 14995, 17090, 23992, 29990, 34180, 59980, 68360, 119960, 5125291, 10250582, 20501164, 25626455, 41002328, 51252910, 102505820, 205011640]

約数ペア:

[(1, 205011640), (2, 102505820), (4, 51252910), (5, 41002328), (8, 25626455), (10, 20501164), (20, 10250582), (40, 5125291), (1709, 119960), (2999, 68360), (3418, 59980), (5998, 34180), (6836, 29990), (8545, 23992), (11996, 17090), (13672, 14995)]