20498855

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{1427}}^1$

素因数の和:1475

約数の個数: 24

約数和(自身を含む): 28222992

約数和(自身を除く): 7724137

約数列:

[1, 5, 13, 17, 65, 85, 169, 221, 845, 1105, 1427, 2873, 7135, 14365, 18551, 24259, 92755, 121295, 241163, 315367, 1205815, 1576835, 4099771, 20498855]

約数ペア:

[(1, 20498855), (5, 4099771), (13, 1576835), (17, 1205815), (65, 315367), (85, 241163), (169, 121295), (221, 92755), (845, 24259), (1105, 18551), (1427, 14365), (2873, 7135)]