20320729

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{643}}^1$

素因数の和:697

約数の個数: 24

約数和(自身を含む): 25456032

約数和(自身を除く): 5135303

約数列:

[1, 11, 13, 17, 143, 169, 187, 221, 643, 1859, 2431, 2873, 7073, 8359, 10931, 31603, 91949, 108667, 120241, 142103, 1195337, 1563133, 1847339, 20320729]

約数ペア:

[(1, 20320729), (11, 1847339), (13, 1563133), (17, 1195337), (143, 142103), (169, 120241), (187, 108667), (221, 91949), (643, 31603), (1859, 10931), (2431, 8359), (2873, 7073)]