108020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{491}}^1$

素因数の和:511

約数の個数: 24

約数和(自身を含む): 247968

約数和(自身を除く): 139948

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 491, 982, 1964, 2455, 4910, 5401, 9820, 10802, 21604, 27005, 54010, 108020]

約数ペア:

[(1, 108020), (2, 54010), (4, 27005), (5, 21604), (10, 10802), (11, 9820), (20, 5401), (22, 4910), (44, 2455), (55, 1964), (110, 982), (220, 491)]