77491640

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47251}}^1$

素因数の和:47303

約数の個数: 32

約数和(自身を含む): 178612560

約数和(自身を除く): 101120920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 47251, 94502, 189004, 236255, 378008, 472510, 945020, 1890040, 1937291, 3874582, 7749164, 9686455, 15498328, 19372910, 38745820, 77491640]

約数ペア:

[(1, 77491640), (2, 38745820), (4, 19372910), (5, 15498328), (8, 9686455), (10, 7749164), (20, 3874582), (40, 1937291), (41, 1890040), (82, 945020), (164, 472510), (205, 378008), (328, 236255), (410, 189004), (820, 94502), (1640, 47251)]