21986029

素因数分解:

${\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{1063}}^1$

素因数の和:1156

約数の個数: 16

約数和(自身を含む): 24906112

約数和(自身を除く): 2920083

約数列:

[1, 13, 37, 43, 481, 559, 1063, 1591, 13819, 20683, 39331, 45709, 511303, 594217, 1691233, 21986029]

約数ペア:

[(1, 21986029), (13, 1691233), (37, 594217), (43, 511303), (481, 45709), (559, 39331), (1063, 20683), (1591, 13819)]