20809119

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{1663}}^1$

素因数の和:1806

約数の個数: 16

約数和(自身を含む): 28700672

約数和(自身を除く): 7891553

約数列:

[1, 3, 43, 97, 129, 291, 1663, 4171, 4989, 12513, 71509, 161311, 214527, 483933, 6936373, 20809119]

約数ペア:

[(1, 20809119), (3, 6936373), (43, 483933), (97, 214527), (129, 161311), (291, 71509), (1663, 12513), (4171, 4989)]