128900525

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{30509}}^1$

素因数の和:30545

約数の個数: 18

約数和(自身を含む): 173083230

約数和(自身を除く): 44182705

約数列:

[1, 5, 13, 25, 65, 169, 325, 845, 4225, 30509, 152545, 396617, 762725, 1983085, 5156021, 9915425, 25780105, 128900525]

約数ペア:

[(1, 128900525), (5, 25780105), (13, 9915425), (25, 5156021), (65, 1983085), (169, 762725), (325, 396617), (845, 152545), (4225, 30509)]