81821080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{185957}}^1$

素因数の和:185979

約数の個数: 32

約数和(自身を含む): 200834640

約数和(自身を除く): 119013560

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 185957, 371914, 743828, 929785, 1487656, 1859570, 2045527, 3719140, 4091054, 7438280, 8182108, 10227635, 16364216, 20455270, 40910540, 81821080]

約数ペア:

[(1, 81821080), (2, 40910540), (4, 20455270), (5, 16364216), (8, 10227635), (10, 8182108), (11, 7438280), (20, 4091054), (22, 3719140), (40, 2045527), (44, 1859570), (55, 1487656), (88, 929785), (110, 743828), (220, 371914), (440, 185957)]