21082919

素因数分解:

${\mathrm{11}}^2\times {\mathrm{13}}^2\times {\mathrm{1031}}^1$

素因数の和:1079

約数の個数: 18

約数和(自身を含む): 25117848

約数和(自身を除く): 4034929

約数列:

[1, 11, 13, 121, 143, 169, 1031, 1573, 1859, 11341, 13403, 20449, 124751, 147433, 174239, 1621763, 1916629, 21082919]

約数ペア:

[(1, 21082919), (11, 1916629), (13, 1621763), (121, 174239), (143, 147433), (169, 124751), (1031, 20449), (1573, 13403), (1859, 11341)]