81926975

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{19391}}^1$

素因数の和:19427

約数の個数: 18

約数和(自身を含む): 110010816

約数和(自身を除く): 28083841

約数列:

[1, 5, 13, 25, 65, 169, 325, 845, 4225, 19391, 96955, 252083, 484775, 1260415, 3277079, 6302075, 16385395, 81926975]

約数ペア:

[(1, 81926975), (5, 16385395), (13, 6302075), (25, 3277079), (65, 1260415), (169, 484775), (325, 252083), (845, 96955), (4225, 19391)]