21684033

素因数分解:

$3^2\times 7^1\times {\mathrm{491}}^1\times {\mathrm{701}}^1$

素因数の和:1205

約数の個数: 24

約数和(自身を含む): 35919936

約数和(自身を除く): 14235903

約数列:

[1, 3, 7, 9, 21, 63, 491, 701, 1473, 2103, 3437, 4419, 4907, 6309, 10311, 14721, 30933, 44163, 344191, 1032573, 2409337, 3097719, 7228011, 21684033]

約数ペア:

[(1, 21684033), (3, 7228011), (7, 3097719), (9, 2409337), (21, 1032573), (63, 344191), (491, 44163), (701, 30933), (1473, 14721), (2103, 10311), (3437, 6309), (4419, 4907)]