20506353

素因数分解:

$3^1\times 7^2\times {\mathrm{199}}^1\times {\mathrm{701}}^1$

素因数の和:917

約数の個数: 24

約数和(自身を含む): 32011200

約数和(自身を除く): 11504847

約数列:

[1, 3, 7, 21, 49, 147, 199, 597, 701, 1393, 2103, 4179, 4907, 9751, 14721, 29253, 34349, 103047, 139499, 418497, 976493, 2929479, 6835451, 20506353]

約数ペア:

[(1, 20506353), (3, 6835451), (7, 2929479), (21, 976493), (49, 418497), (147, 139499), (199, 103047), (597, 34349), (701, 29253), (1393, 14721), (2103, 9751), (4179, 4907)]