21291016895

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{571}}^1\times {\mathrm{181889}}^1$

素因数の和:182506

約数の個数: 16

約数和(自身を含む): 26218352160

約数和(自身を除く): 4927335265

約数列:

[1, 5, 41, 205, 571, 2855, 23411, 117055, 181889, 909445, 7457449, 37287245, 103858619, 519293095, 4258203379, 21291016895]

約数ペア:

[(1, 21291016895), (5, 4258203379), (41, 519293095), (205, 103858619), (571, 37287245), (2855, 7457449), (23411, 909445), (117055, 181889)]