21520444

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{489101}}^1$

素因数の和:489116

約数の個数: 12

約数和(自身を含む): 41084568

約数和(自身を除く): 19564124

約数列:

[1, 2, 4, 11, 22, 44, 489101, 978202, 1956404, 5380111, 10760222, 21520444]

約数ペア:

[(1, 21520444), (2, 10760222), (4, 5380111), (11, 1956404), (22, 978202), (44, 489101)]