20509918

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71713}}^1$

素因数の和:71739

約数の個数: 16

約数和(自身を含む): 36143856

約数和(自身を除く): 15633938

約数列:

[1, 2, 11, 13, 22, 26, 143, 286, 71713, 143426, 788843, 932269, 1577686, 1864538, 10254959, 20509918]

約数ペア:

[(1, 20509918), (2, 10254959), (11, 1864538), (13, 1577686), (22, 932269), (26, 788843), (143, 143426), (286, 71713)]