28304721

素因数分解:

$3^4\times {\mathrm{223}}^1\times {\mathrm{1567}}^1$

素因数の和:1802

約数の個数: 20

約数和(自身を含む): 42499072

約数和(自身を除く): 14194351

約数列:

[1, 3, 9, 27, 81, 223, 669, 1567, 2007, 4701, 6021, 14103, 18063, 42309, 126927, 349441, 1048323, 3144969, 9434907, 28304721]

約数ペア:

[(1, 28304721), (3, 9434907), (9, 3144969), (27, 1048323), (81, 349441), (223, 126927), (669, 42309), (1567, 18063), (2007, 14103), (4701, 6021)]