20482749

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{7561}}^1$

素因数の和:7617

約数の個数: 24

約数和(自身を含む): 34603712

約数和(自身を除く): 14120963

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 301, 387, 903, 2709, 7561, 22683, 52927, 68049, 158781, 325123, 476343, 975369, 2275861, 2926107, 6827583, 20482749]

約数ペア:

[(1, 20482749), (3, 6827583), (7, 2926107), (9, 2275861), (21, 975369), (43, 476343), (63, 325123), (129, 158781), (301, 68049), (387, 52927), (903, 22683), (2709, 7561)]