771640

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{191}}^1$

素因数の和:303

約数の個数: 32

約数和(自身を含む): 1762560

約数和(自身を除く): 990920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 191, 202, 382, 404, 505, 764, 808, 955, 1010, 1528, 1910, 2020, 3820, 4040, 7640, 19291, 38582, 77164, 96455, 154328, 192910, 385820, 771640]

約数ペア:

[(1, 771640), (2, 385820), (4, 192910), (5, 154328), (8, 96455), (10, 77164), (20, 38582), (40, 19291), (101, 7640), (191, 4040), (202, 3820), (382, 2020), (404, 1910), (505, 1528), (764, 1010), (808, 955)]