256520735

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{113}}^1\times {\mathrm{1571}}^1$

素因数の和:1723

約数の個数: 24

約数和(自身を含む): 330101136

約数和(自身を除く): 73580401

約数列:

[1, 5, 17, 85, 113, 289, 565, 1445, 1571, 1921, 7855, 9605, 26707, 32657, 133535, 163285, 177523, 454019, 887615, 2270095, 3017891, 15089455, 51304147, 256520735]

約数ペア:

[(1, 256520735), (5, 51304147), (17, 15089455), (85, 3017891), (113, 2270095), (289, 887615), (565, 454019), (1445, 177523), (1571, 163285), (1921, 133535), (7855, 32657), (9605, 26707)]