387600280

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{225349}}^1$

素因数の和:225403

約数の個数: 32

約数和(自身を含む): 892386000

約数和(自身を除く): 504785720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 225349, 450698, 901396, 1126745, 1802792, 2253490, 4506980, 9013960, 9690007, 19380014, 38760028, 48450035, 77520056, 96900070, 193800140, 387600280]

約数ペア:

[(1, 387600280), (2, 193800140), (4, 96900070), (5, 77520056), (8, 48450035), (10, 38760028), (20, 19380014), (40, 9690007), (43, 9013960), (86, 4506980), (172, 2253490), (215, 1802792), (344, 1126745), (430, 901396), (860, 450698), (1720, 225349)]