20861259

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{2633}}^1$

素因数の和:2794

約数の個数: 16

約数和(自身を含む): 29500800

約数和(自身を除く): 8639541

約数列:

[1, 3, 19, 57, 139, 417, 2633, 2641, 7899, 7923, 50027, 150081, 365987, 1097961, 6953753, 20861259]

約数ペア:

[(1, 20861259), (3, 6953753), (19, 1097961), (57, 365987), (139, 150081), (417, 50027), (2633, 7923), (2641, 7899)]