81728020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{371491}}^1$

素因数の和:371511

約数の個数: 24

約数和(自身を含む): 187231968

約数和(自身を除く): 105503948

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 371491, 742982, 1485964, 1857455, 3714910, 4086401, 7429820, 8172802, 16345604, 20432005, 40864010, 81728020]

約数ペア:

[(1, 81728020), (2, 40864010), (4, 20432005), (5, 16345604), (10, 8172802), (11, 7429820), (20, 4086401), (22, 3714910), (44, 1857455), (55, 1485964), (110, 742982), (220, 371491)]