28390375

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{17471}}^1$

素因数の和:17499

約数の個数: 16

約数和(自身を含む): 38158848

約数和(自身を除く): 9768473

約数列:

[1, 5, 13, 25, 65, 125, 325, 1625, 17471, 87355, 227123, 436775, 1135615, 2183875, 5678075, 28390375]

約数ペア:

[(1, 28390375), (5, 5678075), (13, 2183875), (25, 1135615), (65, 436775), (125, 227123), (325, 87355), (1625, 17471)]