21491882140

素因数分解:

$2^2\times 5^1\times {\mathrm{2441}}^1\times {\mathrm{440227}}^1$

素因数の和:442677

約数の個数: 24

約数和(自身を含む): 45151544592

約数和(自身を除く): 23659662452

約数列:

[1, 2, 4, 5, 10, 20, 2441, 4882, 9764, 12205, 24410, 48820, 440227, 880454, 1760908, 2201135, 4402270, 8804540, 1074594107, 2149188214, 4298376428, 5372970535, 10745941070, 21491882140]

約数ペア:

[(1, 21491882140), (2, 10745941070), (4, 5372970535), (5, 4298376428), (10, 2149188214), (20, 1074594107), (2441, 8804540), (4882, 4402270), (9764, 2201135), (12205, 1760908), (24410, 880454), (48820, 440227)]