21880467

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{6553}}^1$

素因数の和:6619

約数の個数: 24

約数和(自身を含む): 36807264

約数和(自身を除く): 14926797

約数列:

[1, 3, 7, 9, 21, 53, 63, 159, 371, 477, 1113, 3339, 6553, 19659, 45871, 58977, 137613, 347309, 412839, 1041927, 2431163, 3125781, 7293489, 21880467]

約数ペア:

[(1, 21880467), (3, 7293489), (7, 3125781), (9, 2431163), (21, 1041927), (53, 412839), (63, 347309), (159, 137613), (371, 58977), (477, 45871), (1113, 19659), (3339, 6553)]