19857957

素因数分解:

$3^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{6803}}^1$

素因数の和:6952

約数の個数: 16

約数和(自身を含む): 30481920

約数和(自身を除く): 10623963

約数列:

[1, 3, 7, 21, 139, 417, 973, 2919, 6803, 20409, 47621, 142863, 945617, 2836851, 6619319, 19857957]

約数ペア:

[(1, 19857957), (3, 6619319), (7, 2836851), (21, 945617), (139, 142863), (417, 47621), (973, 20409), (2919, 6803)]