28700425

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{6793}}^1$

素因数の和:6829

約数の個数: 18

約数和(自身を含む): 38542362

約数和(自身を除く): 9841937

約数列:

[1, 5, 13, 25, 65, 169, 325, 845, 4225, 6793, 33965, 88309, 169825, 441545, 1148017, 2207725, 5740085, 28700425]

約数ペア:

[(1, 28700425), (5, 5740085), (13, 2207725), (25, 1148017), (65, 441545), (169, 169825), (325, 88309), (845, 33965), (4225, 6793)]