1991238040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{4525541}}^1$

素因数の和:4525563

約数の個数: 32

約数和(自身を含む): 4887585360

約数和(自身を除く): 2896347320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 4525541, 9051082, 18102164, 22627705, 36204328, 45255410, 49780951, 90510820, 99561902, 181021640, 199123804, 248904755, 398247608, 497809510, 995619020, 1991238040]

約数ペア:

[(1, 1991238040), (2, 995619020), (4, 497809510), (5, 398247608), (8, 248904755), (10, 199123804), (11, 181021640), (20, 99561902), (22, 90510820), (40, 49780951), (44, 45255410), (55, 36204328), (88, 22627705), (110, 18102164), (220, 9051082), (440, 4525541)]