18871170040

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{11506811}}^1$

素因数の和:11506863

約数の個数: 32

約数和(自身を含む): 43495749360

約数和(自身を除く): 24624579320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 11506811, 23013622, 46027244, 57534055, 92054488, 115068110, 230136220, 460272440, 471779251, 943558502, 1887117004, 2358896255, 3774234008, 4717792510, 9435585020, 18871170040]

約数ペア:

[(1, 18871170040), (2, 9435585020), (4, 4717792510), (5, 3774234008), (8, 2358896255), (10, 1887117004), (20, 943558502), (40, 471779251), (41, 460272440), (82, 230136220), (164, 115068110), (205, 92054488), (328, 57534055), (410, 46027244), (820, 23013622), (1640, 11506811)]