25721109

素因数分解:

$3^2\times {\mathrm{59}}^2\times {\mathrm{821}}^1$

素因数の和:945

約数の個数: 18

約数和(自身を含む): 37839126

約数和(自身を除く): 12118017

約数列:

[1, 3, 9, 59, 177, 531, 821, 2463, 3481, 7389, 10443, 31329, 48439, 145317, 435951, 2857901, 8573703, 25721109]

約数ペア:

[(1, 25721109), (3, 8573703), (9, 2857901), (59, 435951), (177, 145317), (531, 48439), (821, 31329), (2463, 10443), (3481, 7389)]