20971545

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{199729}}^1$

素因数の和:199744

約数の個数: 16

約数和(自身を含む): 38348160

約数和(自身を除く): 17376615

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 199729, 599187, 998645, 1398103, 2995935, 4194309, 6990515, 20971545]

約数ペア:

[(1, 20971545), (3, 6990515), (5, 4194309), (7, 2995935), (15, 1398103), (21, 998645), (35, 599187), (105, 199729)]