21065589

素因数分解:

$3^4\times {\mathrm{139}}^1\times {\mathrm{1871}}^1$

素因数の和:2022

約数の個数: 20

約数和(自身を含む): 31711680

約数和(自身を除く): 10646091

約数列:

[1, 3, 9, 27, 81, 139, 417, 1251, 1871, 3753, 5613, 11259, 16839, 50517, 151551, 260069, 780207, 2340621, 7021863, 21065589]

約数ペア:

[(1, 21065589), (3, 7021863), (9, 2340621), (27, 780207), (81, 260069), (139, 151551), (417, 50517), (1251, 16839), (1871, 11259), (3753, 5613)]