20428863

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{74831}}^1$

素因数の和:74854

約数の個数: 16

約数和(自身を含む): 33524736

約数和(自身を除く): 13095873

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 74831, 224493, 523817, 972803, 1571451, 2918409, 6809621, 20428863]

約数ペア:

[(1, 20428863), (3, 6809621), (7, 2918409), (13, 1571451), (21, 972803), (39, 523817), (91, 224493), (273, 74831)]