16920081

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{26479}}^1$

素因数の和:26556

約数の個数: 12

約数和(自身を含む): 24785280

約数和(自身を除く): 7865199

約数列:

[1, 3, 9, 71, 213, 639, 26479, 79437, 238311, 1880009, 5640027, 16920081]

約数ペア:

[(1, 16920081), (3, 5640027), (9, 1880009), (71, 238311), (213, 79437), (639, 26479)]