664314625

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{408809}}^1$

素因数の和:408837

約数の個数: 16

約数和(自身を含む): 892841040

約数和(自身を除く): 228526415

約数列:

[1, 5, 13, 25, 65, 125, 325, 1625, 408809, 2044045, 5314517, 10220225, 26572585, 51101125, 132862925, 664314625]

約数ペア:

[(1, 664314625), (5, 132862925), (13, 51101125), (25, 26572585), (65, 10220225), (125, 5314517), (325, 2044045), (1625, 408809)]