20766440

素因数分解:

$2^3\times 5^1\times {\mathrm{519161}}^1$

素因数の和:519172

約数の個数: 16

約数和(自身を含む): 46724580

約数和(自身を除く): 25958140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 519161, 1038322, 2076644, 2595805, 4153288, 5191610, 10383220, 20766440]

約数ペア:

[(1, 20766440), (2, 10383220), (4, 5191610), (5, 4153288), (8, 2595805), (10, 2076644), (20, 1038322), (40, 519161)]