91210520

素因数分解:

$2^3\times 5^1\times {\mathrm{1013}}^1\times {\mathrm{2251}}^1$

素因数の和:3275

約数の個数: 32

約数和(自身を含む): 205517520

約数和(自身を除く): 114307000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1013, 2026, 2251, 4052, 4502, 5065, 8104, 9004, 10130, 11255, 18008, 20260, 22510, 40520, 45020, 90040, 2280263, 4560526, 9121052, 11401315, 18242104, 22802630, 45605260, 91210520]

約数ペア:

[(1, 91210520), (2, 45605260), (4, 22802630), (5, 18242104), (8, 11401315), (10, 9121052), (20, 4560526), (40, 2280263), (1013, 90040), (2026, 45020), (2251, 40520), (4052, 22510), (4502, 20260), (5065, 18008), (8104, 11255), (9004, 10130)]