256986025

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{35569}}^1$

素因数の和:35613

約数の個数: 18

約数和(自身を含む): 338519690

約数和(自身を除く): 81533665

約数列:

[1, 5, 17, 25, 85, 289, 425, 1445, 7225, 35569, 177845, 604673, 889225, 3023365, 10279441, 15116825, 51397205, 256986025]

約数ペア:

[(1, 256986025), (5, 51397205), (17, 15116825), (25, 10279441), (85, 3023365), (289, 889225), (425, 604673), (1445, 177845), (7225, 35569)]