20454545

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{1549}}^1$

素因数の和:1712

約数の個数: 16

約数和(自身を含む): 26040000

約数和(自身を除く): 5585455

約数列:

[1, 5, 19, 95, 139, 695, 1549, 2641, 7745, 13205, 29431, 147155, 215311, 1076555, 4090909, 20454545]

約数ペア:

[(1, 20454545), (5, 4090909), (19, 1076555), (95, 215311), (139, 147155), (695, 29431), (1549, 13205), (2641, 7745)]