18018220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{81901}}^1$

素因数の和:81921

約数の個数: 24

約数和(自身を含む): 41278608

約数和(自身を除く): 23260388

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 81901, 163802, 327604, 409505, 819010, 900911, 1638020, 1801822, 3603644, 4504555, 9009110, 18018220]

約数ペア:

[(1, 18018220), (2, 9009110), (4, 4504555), (5, 3603644), (10, 1801822), (11, 1638020), (20, 900911), (22, 819010), (44, 409505), (55, 327604), (110, 163802), (220, 81901)]