7721001

素因数分解:

$3^4\times {\mathrm{199}}^1\times {\mathrm{479}}^1$

素因数の和:690

約数の個数: 20

約数和(自身を含む): 11616000

約数和(自身を除く): 3894999

約数列:

[1, 3, 9, 27, 81, 199, 479, 597, 1437, 1791, 4311, 5373, 12933, 16119, 38799, 95321, 285963, 857889, 2573667, 7721001]

約数ペア:

[(1, 7721001), (3, 2573667), (9, 857889), (27, 285963), (81, 95321), (199, 38799), (479, 16119), (597, 12933), (1437, 5373), (1791, 4311)]