21555644

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{489901}}^1$

素因数の和:489916

約数の個数: 12

約数和(自身を含む): 41151768

約数和(自身を除く): 19596124

約数列:

[1, 2, 4, 11, 22, 44, 489901, 979802, 1959604, 5388911, 10777822, 21555644]

約数ペア:

[(1, 21555644), (2, 10777822), (4, 5388911), (11, 1959604), (22, 979802), (44, 489901)]