21474243

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{7927}}^1$

素因数の和:7983

約数の個数: 24

約数和(自身を含む): 36278528

約数和(自身を除く): 14804285

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 301, 387, 903, 2709, 7927, 23781, 55489, 71343, 166467, 340861, 499401, 1022583, 2386027, 3067749, 7158081, 21474243]

約数ペア:

[(1, 21474243), (3, 7158081), (7, 3067749), (9, 2386027), (21, 1022583), (43, 499401), (63, 340861), (129, 166467), (301, 71343), (387, 55489), (903, 23781), (2709, 7927)]