21699993

素因数分解:

$3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{3433}}^1$

素因数の和:3493

約数の個数: 24

約数和(自身を含む): 34449888

約数和(自身を除く): 12749895

約数列:

[1, 3, 7, 21, 43, 49, 129, 147, 301, 903, 2107, 3433, 6321, 10299, 24031, 72093, 147619, 168217, 442857, 504651, 1033333, 3099999, 7233331, 21699993]

約数ペア:

[(1, 21699993), (3, 7233331), (7, 3099999), (21, 1033333), (43, 504651), (49, 442857), (129, 168217), (147, 147619), (301, 72093), (903, 24031), (2107, 10299), (3433, 6321)]