18415971

素因数分解:

$3^3\times 7^1\times {\mathrm{139}}^1\times {\mathrm{701}}^1$

素因数の和:856

約数の個数: 32

約数和(自身を含む): 31449600

約数和(自身を除く): 13033629

約数列:

[1, 3, 7, 9, 21, 27, 63, 139, 189, 417, 701, 973, 1251, 2103, 2919, 3753, 4907, 6309, 8757, 14721, 18927, 26271, 44163, 97439, 132489, 292317, 682073, 876951, 2046219, 2630853, 6138657, 18415971]

約数ペア:

[(1, 18415971), (3, 6138657), (7, 2630853), (9, 2046219), (21, 876951), (27, 682073), (63, 292317), (139, 132489), (189, 97439), (417, 44163), (701, 26271), (973, 18927), (1251, 14721), (2103, 8757), (2919, 6309), (3753, 4907)]