20837241

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{2341}}^1$

素因数の和:2413

約数の個数: 24

約数和(自身を含む): 32150976

約数和(自身を除く): 11313735

約数列:

[1, 3, 9, 23, 43, 69, 129, 207, 387, 989, 2341, 2967, 7023, 8901, 21069, 53843, 100663, 161529, 301989, 484587, 905967, 2315249, 6945747, 20837241]

約数ペア:

[(1, 20837241), (3, 6945747), (9, 2315249), (23, 905967), (43, 484587), (69, 301989), (129, 161529), (207, 100663), (387, 53843), (989, 21069), (2341, 8901), (2967, 7023)]