21349839

素因数分解:

$3^1\times 7^2\times {\mathrm{311}}^1\times {\mathrm{467}}^1$

素因数の和:795

約数の個数: 24

約数和(自身を含む): 33291648

約数和(自身を除く): 11941809

約数列:

[1, 3, 7, 21, 49, 147, 311, 467, 933, 1401, 2177, 3269, 6531, 9807, 15239, 22883, 45717, 68649, 145237, 435711, 1016659, 3049977, 7116613, 21349839]

約数ペア:

[(1, 21349839), (3, 7116613), (7, 3049977), (21, 1016659), (49, 435711), (147, 145237), (311, 68649), (467, 45717), (933, 22883), (1401, 15239), (2177, 9807), (3269, 6531)]