21554324

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{489871}}^1$

素因数の和:489886

約数の個数: 12

約数和(自身を含む): 41149248

約数和(自身を除く): 19594924

約数列:

[1, 2, 4, 11, 22, 44, 489871, 979742, 1959484, 5388581, 10777162, 21554324]

約数ペア:

[(1, 21554324), (2, 10777162), (4, 5388581), (11, 1959484), (22, 979742), (44, 489871)]