18155781

素因数分解:

$3^2\times 7^1\times {\mathrm{97}}^1\times {\mathrm{2971}}^1$

素因数の和:3081

約数の個数: 24

約数和(自身を含む): 30290624

約数和(自身を除く): 12134843

約数列:

[1, 3, 7, 9, 21, 63, 97, 291, 679, 873, 2037, 2971, 6111, 8913, 20797, 26739, 62391, 187173, 288187, 864561, 2017309, 2593683, 6051927, 18155781]

約数ペア:

[(1, 18155781), (3, 6051927), (7, 2593683), (9, 2017309), (21, 864561), (63, 288187), (97, 187173), (291, 62391), (679, 26739), (873, 20797), (2037, 8913), (2971, 6111)]