478308025

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{113209}}^1$

素因数の和:113245

約数の個数: 18

約数和(自身を含む): 642240330

約数和(自身を除く): 163932305

約数列:

[1, 5, 13, 25, 65, 169, 325, 845, 4225, 113209, 566045, 1471717, 2830225, 7358585, 19132321, 36792925, 95661605, 478308025]

約数ペア:

[(1, 478308025), (5, 95661605), (13, 36792925), (25, 19132321), (65, 7358585), (169, 2830225), (325, 1471717), (845, 566045), (4225, 113209)]