398490620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1811321}}^1$

素因数の和:1811341

約数の個数: 24

約数和(自身を含む): 912906288

約数和(自身を除く): 514415668

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 1811321, 3622642, 7245284, 9056605, 18113210, 19924531, 36226420, 39849062, 79698124, 99622655, 199245310, 398490620]

約数ペア:

[(1, 398490620), (2, 199245310), (4, 99622655), (5, 79698124), (10, 39849062), (11, 36226420), (20, 19924531), (22, 18113210), (44, 9056605), (55, 7245284), (110, 3622642), (220, 1811321)]