408807

素因数分解:

$3^4\times 7^2\times {\mathrm{103}}^1$

素因数の和:129

約数の個数: 30

約数和(自身を含む): 717288

約数和(自身を除く): 308481

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 103, 147, 189, 309, 441, 567, 721, 927, 1323, 2163, 2781, 3969, 5047, 6489, 8343, 15141, 19467, 45423, 58401, 136269, 408807]

約数ペア:

[(1, 408807), (3, 136269), (7, 58401), (9, 45423), (21, 19467), (27, 15141), (49, 8343), (63, 6489), (81, 5047), (103, 3969), (147, 2781), (189, 2163), (309, 1323), (441, 927), (567, 721)]