28518820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{129631}}^1$

素因数の和:129651

約数の個数: 24

約数和(自身を含む): 65334528

約数和(自身を除く): 36815708

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 129631, 259262, 518524, 648155, 1296310, 1425941, 2592620, 2851882, 5703764, 7129705, 14259410, 28518820]

約数ペア:

[(1, 28518820), (2, 14259410), (4, 7129705), (5, 5703764), (10, 2851882), (11, 2592620), (20, 1425941), (22, 1296310), (44, 648155), (55, 518524), (110, 259262), (220, 129631)]