20882121

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{28181}}^1$

素因数の和:28216

約数の個数: 16

約数和(自身を含む): 31563840

約数和(自身を除く): 10681719

約数列:

[1, 3, 13, 19, 39, 57, 247, 741, 28181, 84543, 366353, 535439, 1099059, 1606317, 6960707, 20882121]

約数ペア:

[(1, 20882121), (3, 6960707), (13, 1606317), (19, 1099059), (39, 535439), (57, 366353), (247, 84543), (741, 28181)]