321489

素因数分解:

$3^8\times 7^2$

素因数の和:38

約数の個数: 27

約数和(自身を含む): 560937

約数和(自身を除く): 239448

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 243, 441, 567, 729, 1323, 1701, 2187, 3969, 5103, 6561, 11907, 15309, 35721, 45927, 107163, 321489]

約数ペア:

[(1, 321489), (3, 107163), (7, 45927), (9, 35721), (21, 15309), (27, 11907), (49, 6561), (63, 5103), (81, 3969), (147, 2187), (189, 1701), (243, 1323), (441, 729)]