138820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{631}}^1$

素因数の和:651

約数の個数: 24

約数和(自身を含む): 318528

約数和(自身を除く): 179708

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 631, 1262, 2524, 3155, 6310, 6941, 12620, 13882, 27764, 34705, 69410, 138820]

約数ペア:

[(1, 138820), (2, 69410), (4, 34705), (5, 27764), (10, 13882), (11, 12620), (20, 6941), (22, 6310), (44, 3155), (55, 2524), (110, 1262), (220, 631)]