20742771

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{599}}^1$

素因数の和:723

約数の個数: 32

約数和(自身を含む): 33868800

約数和(自身を除く): 13126029

約数列:

[1, 3, 7, 17, 21, 51, 97, 119, 291, 357, 599, 679, 1649, 1797, 2037, 4193, 4947, 10183, 11543, 12579, 30549, 34629, 58103, 71281, 174309, 213843, 406721, 987751, 1220163, 2963253, 6914257, 20742771]

約数ペア:

[(1, 20742771), (3, 6914257), (7, 2963253), (17, 1220163), (21, 987751), (51, 406721), (97, 213843), (119, 174309), (291, 71281), (357, 58103), (599, 34629), (679, 30549), (1649, 12579), (1797, 11543), (2037, 10183), (4193, 4947)]