31221080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{70957}}^1$

素因数の和:70979

約数の個数: 32

約数和(自身を含む): 76634640

約数和(自身を除く): 45413560

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 70957, 141914, 283828, 354785, 567656, 709570, 780527, 1419140, 1561054, 2838280, 3122108, 3902635, 6244216, 7805270, 15610540, 31221080]

約数ペア:

[(1, 31221080), (2, 15610540), (4, 7805270), (5, 6244216), (8, 3902635), (10, 3122108), (11, 2838280), (20, 1561054), (22, 1419140), (40, 780527), (44, 709570), (55, 567656), (88, 354785), (110, 283828), (220, 141914), (440, 70957)]