31581121

素因数分解:

${\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1181}}^1$

素因数の和:1233

約数の個数: 24

約数和(自身を含む): 39615912

約数和(自身を除く): 8034791

約数列:

[1, 11, 13, 17, 121, 143, 187, 221, 1181, 1573, 2057, 2431, 12991, 15353, 20077, 26741, 142901, 168883, 220847, 261001, 1857713, 2429317, 2871011, 31581121]

約数ペア:

[(1, 31581121), (11, 2871011), (13, 2429317), (17, 1857713), (121, 261001), (143, 220847), (187, 168883), (221, 142901), (1181, 26741), (1573, 20077), (2057, 15353), (2431, 12991)]