28520667

素因数分解:

$3^{11}\times 7^1\times {\mathrm{23}}^1$

素因数の和:63

約数の個数: 48

約数和(自身を含む): 51018240

約数和(自身を除く): 22497573

約数列:

[1, 3, 7, 9, 21, 23, 27, 63, 69, 81, 161, 189, 207, 243, 483, 567, 621, 729, 1449, 1701, 1863, 2187, 4347, 5103, 5589, 6561, 13041, 15309, 16767, 19683, 39123, 45927, 50301, 59049, 117369, 137781, 150903, 177147, 352107, 413343, 452709, 1056321, 1240029, 1358127, 3168963, 4074381, 9506889, 28520667]

約数ペア:

[(1, 28520667), (3, 9506889), (7, 4074381), (9, 3168963), (21, 1358127), (23, 1240029), (27, 1056321), (63, 452709), (69, 413343), (81, 352107), (161, 177147), (189, 150903), (207, 137781), (243, 117369), (483, 59049), (567, 50301), (621, 45927), (729, 39123), (1449, 19683), (1701, 16767), (1863, 15309), (2187, 13041), (4347, 6561), (5103, 5589)]