220393467

素因数分解:

$3^6\times 7^1\times {\mathrm{43189}}^1$

素因数の和:43214

約数の個数: 28

約数和(自身を含む): 377653360

約数和(自身を除く): 157259893

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 729, 1701, 5103, 43189, 129567, 302323, 388701, 906969, 1166103, 2720907, 3498309, 8162721, 10494927, 24488163, 31484781, 73464489, 220393467]

約数ペア:

[(1, 220393467), (3, 73464489), (7, 31484781), (9, 24488163), (21, 10494927), (27, 8162721), (63, 3498309), (81, 2720907), (189, 1166103), (243, 906969), (567, 388701), (729, 302323), (1701, 129567), (5103, 43189)]