21260345

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{757}}^1$

素因数の和:940

約数の個数: 16

約数和(自身を含む): 26360208

約数和(自身を除く): 5099863

約数列:

[1, 5, 41, 137, 205, 685, 757, 3785, 5617, 28085, 31037, 103709, 155185, 518545, 4252069, 21260345]

約数ペア:

[(1, 21260345), (5, 4252069), (41, 518545), (137, 155185), (205, 103709), (685, 31037), (757, 28085), (3785, 5617)]