21172359

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{13241}}^1$

素因数の和:13298

約数の個数: 16

約数和(自身を含む): 31145184

約数和(自身を除く): 9972825

約数列:

[1, 3, 13, 39, 41, 123, 533, 1599, 13241, 39723, 172133, 516399, 542881, 1628643, 7057453, 21172359]

約数ペア:

[(1, 21172359), (3, 7057453), (13, 1628643), (39, 542881), (41, 516399), (123, 172133), (533, 39723), (1599, 13241)]