18784467

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{17839}}^1$

素因数の和:17864

約数の個数: 20

約数和(自身を含む): 30220960

約数和(自身を除く): 11436493

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 17839, 53517, 160551, 231907, 481653, 695721, 1444959, 2087163, 6261489, 18784467]

約数ペア:

[(1, 18784467), (3, 6261489), (9, 2087163), (13, 1444959), (27, 695721), (39, 481653), (81, 231907), (117, 160551), (351, 53517), (1053, 17839)]