20904351

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{28211}}^1$

素因数の和:28246

約数の個数: 16

約数和(自身を含む): 31597440

約数和(自身を除く): 10693089

約数列:

[1, 3, 13, 19, 39, 57, 247, 741, 28211, 84633, 366743, 536009, 1100229, 1608027, 6968117, 20904351]

約数ペア:

[(1, 20904351), (3, 6968117), (13, 1608027), (19, 1100229), (39, 536009), (57, 366743), (247, 84633), (741, 28211)]