21535316

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{489439}}^1$

素因数の和:489454

約数の個数: 12

約数和(自身を含む): 41112960

約数和(自身を除く): 19577644

約数列:

[1, 2, 4, 11, 22, 44, 489439, 978878, 1957756, 5383829, 10767658, 21535316]

約数ペア:

[(1, 21535316), (2, 10767658), (4, 5383829), (11, 1957756), (22, 978878), (44, 489439)]