81282475

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{811}}^1$

素因数の和:1051

約数の個数: 24

約数和(自身を含む): 106729280

約数和(自身を除く): 25446805

約数列:

[1, 5, 19, 25, 95, 211, 475, 811, 1055, 4009, 4055, 5275, 15409, 20045, 20275, 77045, 100225, 171121, 385225, 855605, 3251299, 4278025, 16256495, 81282475]

約数ペア:

[(1, 81282475), (5, 16256495), (19, 4278025), (25, 3251299), (95, 855605), (211, 385225), (475, 171121), (811, 100225), (1055, 77045), (4009, 20275), (4055, 20045), (5275, 15409)]