208552825

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{641701}}^1$

素因数の和:641724

約数の個数: 12

約数和(自身を含む): 278498668

約数和(自身を除く): 69945843

約数列:

[1, 5, 13, 25, 65, 325, 641701, 3208505, 8342113, 16042525, 41710565, 208552825]

約数ペア:

[(1, 208552825), (5, 41710565), (13, 16042525), (25, 8342113), (65, 3208505), (325, 641701)]