20455881

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{701}}^1$

素因数の和:912

約数の個数: 16

約数和(自身を含む): 27900288

約数和(自身を除く): 7444407

約数列:

[1, 3, 71, 137, 213, 411, 701, 2103, 9727, 29181, 49771, 96037, 149313, 288111, 6818627, 20455881]

約数ペア:

[(1, 20455881), (3, 6818627), (71, 288111), (137, 149313), (213, 96037), (411, 49771), (701, 29181), (2103, 9727)]