81307820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{369581}}^1$

素因数の和:369601

約数の個数: 24

約数和(自身を含む): 186269328

約数和(自身を除く): 104961508

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 369581, 739162, 1478324, 1847905, 3695810, 4065391, 7391620, 8130782, 16261564, 20326955, 40653910, 81307820]

約数ペア:

[(1, 81307820), (2, 40653910), (4, 20326955), (5, 16261564), (10, 8130782), (11, 7391620), (20, 4065391), (22, 3695810), (44, 1847905), (55, 1478324), (110, 739162), (220, 369581)]