90790025

素因数分解:

$5^2\times {\mathrm{67}}^2\times {\mathrm{809}}^1$

素因数の和:953

約数の個数: 18

約数和(自身を含む): 114426270

約数和(自身を除く): 23636245

約数列:

[1, 5, 25, 67, 335, 809, 1675, 4045, 4489, 20225, 22445, 54203, 112225, 271015, 1355075, 3631601, 18158005, 90790025]

約数ペア:

[(1, 90790025), (5, 18158005), (25, 3631601), (67, 1355075), (335, 271015), (809, 112225), (1675, 54203), (4045, 22445), (4489, 20225)]