20510425

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{283}}^1$

素因数の和:529

約数の個数: 24

約数和(自身を含む): 27609344

約数和(自身を除く): 7098919

約数列:

[1, 5, 13, 25, 65, 223, 283, 325, 1115, 1415, 2899, 3679, 5575, 7075, 14495, 18395, 63109, 72475, 91975, 315545, 820417, 1577725, 4102085, 20510425]

約数ペア:

[(1, 20510425), (5, 4102085), (13, 1577725), (25, 820417), (65, 315545), (223, 91975), (283, 72475), (325, 63109), (1115, 18395), (1415, 14495), (2899, 7075), (3679, 5575)]