21828771

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{11717}}^1$

素因数の和:11752

約数の個数: 20

約数和(自身を含む): 34029072

約数和(自身を除く): 12200301

約数列:

[1, 3, 9, 23, 27, 69, 81, 207, 621, 1863, 11717, 35151, 105453, 269491, 316359, 808473, 949077, 2425419, 7276257, 21828771]

約数ペア:

[(1, 21828771), (3, 7276257), (9, 2425419), (23, 949077), (27, 808473), (69, 316359), (81, 269491), (207, 105453), (621, 35151), (1863, 11717)]