8720721

素因数分解:

$3^2\times {\mathrm{139}}^1\times {\mathrm{6971}}^1$

素因数の和:7116

約数の個数: 12

約数和(自身を含む): 12689040

約数和(自身を除く): 3968319

約数列:

[1, 3, 9, 139, 417, 1251, 6971, 20913, 62739, 968969, 2906907, 8720721]

約数ペア:

[(1, 8720721), (3, 2906907), (9, 968969), (139, 62739), (417, 20913), (1251, 6971)]