21850855

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{1361}}^1$

素因数の和:1411

約数の個数: 24

約数和(自身を含む): 29909520

約数和(自身を除く): 8058665

約数列:

[1, 5, 13, 19, 65, 95, 169, 247, 845, 1235, 1361, 3211, 6805, 16055, 17693, 25859, 88465, 129295, 230009, 336167, 1150045, 1680835, 4370171, 21850855]

約数ペア:

[(1, 21850855), (5, 4370171), (13, 1680835), (19, 1150045), (65, 336167), (95, 230009), (169, 129295), (247, 88465), (845, 25859), (1235, 17693), (1361, 16055), (3211, 6805)]