31688080

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{9661}}^1$

素因数の和:9715

約数の個数: 40

約数和(自身を含む): 75479544

約数和(自身を除く): 43791464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 9661, 19322, 38644, 48305, 77288, 96610, 154576, 193220, 386440, 396101, 772880, 792202, 1584404, 1980505, 3168808, 3961010, 6337616, 7922020, 15844040, 31688080]

約数ペア:

[(1, 31688080), (2, 15844040), (4, 7922020), (5, 6337616), (8, 3961010), (10, 3168808), (16, 1980505), (20, 1584404), (40, 792202), (41, 772880), (80, 396101), (82, 386440), (164, 193220), (205, 154576), (328, 96610), (410, 77288), (656, 48305), (820, 38644), (1640, 19322), (3280, 9661)]