21668927

素因数分解:

$7^2\times {\mathrm{47}}^1\times {\mathrm{97}}^2$

素因数の和:255

約数の個数: 18

約数和(自身を含む): 26011152

約数和(自身を除く): 4342225

約数列:

[1, 7, 47, 49, 97, 329, 679, 2303, 4559, 4753, 9409, 31913, 65863, 223391, 442223, 461041, 3095561, 21668927]

約数ペア:

[(1, 21668927), (7, 3095561), (47, 461041), (49, 442223), (97, 223391), (329, 65863), (679, 31913), (2303, 9409), (4559, 4753)]