21088287

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{277}}^1\times {\mathrm{769}}^1$

素因数の和:1063

約数の個数: 24

約数和(自身を含む): 33393360

約数和(自身を除く): 12305073

約数列:

[1, 3, 9, 11, 33, 99, 277, 769, 831, 2307, 2493, 3047, 6921, 8459, 9141, 25377, 27423, 76131, 213013, 639039, 1917117, 2343143, 7029429, 21088287]

約数ペア:

[(1, 21088287), (3, 7029429), (9, 2343143), (11, 1917117), (33, 639039), (99, 213013), (277, 76131), (769, 27423), (831, 25377), (2307, 9141), (2493, 8459), (3047, 6921)]