21516273

素因数分解:

$3^4\times {\mathrm{109}}^1\times {\mathrm{2437}}^1$

素因数の和:2558

約数の個数: 20

約数和(自身を含む): 32449780

約数和(自身を除く): 10933507

約数列:

[1, 3, 9, 27, 81, 109, 327, 981, 2437, 2943, 7311, 8829, 21933, 65799, 197397, 265633, 796899, 2390697, 7172091, 21516273]

約数ペア:

[(1, 21516273), (3, 7172091), (9, 2390697), (27, 796899), (81, 265633), (109, 197397), (327, 65799), (981, 21933), (2437, 8829), (2943, 7311)]