53408225

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{12641}}^1$

素因数の和:12677

約数の個数: 18

約数和(自身を含む): 71718066

約数和(自身を除く): 18309841

約数列:

[1, 5, 13, 25, 65, 169, 325, 845, 4225, 12641, 63205, 164333, 316025, 821665, 2136329, 4108325, 10681645, 53408225]

約数ペア:

[(1, 53408225), (5, 10681645), (13, 4108325), (25, 2136329), (65, 821665), (169, 316025), (325, 164333), (845, 63205), (4225, 12641)]