64993825

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{6451}}^1$

素因数の和:6505

約数の個数: 24

約数和(自身を含む): 89605376

約数和(自身を除く): 24611551

約数列:

[1, 5, 13, 25, 31, 65, 155, 325, 403, 775, 2015, 6451, 10075, 32255, 83863, 161275, 199981, 419315, 999905, 2096575, 2599753, 4999525, 12998765, 64993825]

約数ペア:

[(1, 64993825), (5, 12998765), (13, 4999525), (25, 2599753), (31, 2096575), (65, 999905), (155, 419315), (325, 199981), (403, 161275), (775, 83863), (2015, 32255), (6451, 10075)]