90205520

素因数分解:

$2^4\times 5^1\times {\mathrm{317}}^1\times {\mathrm{3557}}^1$

素因数の和:3887

約数の個数: 40

約数和(自身を含む): 210448584

約数和(自身を除く): 120243064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 317, 634, 1268, 1585, 2536, 3170, 3557, 5072, 6340, 7114, 12680, 14228, 17785, 25360, 28456, 35570, 56912, 71140, 142280, 284560, 1127569, 2255138, 4510276, 5637845, 9020552, 11275690, 18041104, 22551380, 45102760, 90205520]

約数ペア:

[(1, 90205520), (2, 45102760), (4, 22551380), (5, 18041104), (8, 11275690), (10, 9020552), (16, 5637845), (20, 4510276), (40, 2255138), (80, 1127569), (317, 284560), (634, 142280), (1268, 71140), (1585, 56912), (2536, 35570), (3170, 28456), (3557, 25360), (5072, 17785), (6340, 14228), (7114, 12680)]