21609939

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{4363}}^1$

素因数の和:4506

約数の個数: 16

約数和(自身を含む): 31281152

約数和(自身を除く): 9671213

約数列:

[1, 3, 13, 39, 127, 381, 1651, 4363, 4953, 13089, 56719, 170157, 554101, 1662303, 7203313, 21609939]

約数ペア:

[(1, 21609939), (3, 7203313), (13, 1662303), (39, 554101), (127, 170157), (381, 56719), (1651, 13089), (4363, 4953)]