28289709

素因数分解:

$3^3\times 7^2\times {\mathrm{21383}}^1$

素因数の和:21406

約数の個数: 24

約数和(自身を含む): 48755520

約数和(自身を除く): 20465811

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 21383, 64149, 149681, 192447, 449043, 577341, 1047767, 1347129, 3143301, 4041387, 9429903, 28289709]

約数ペア:

[(1, 28289709), (3, 9429903), (7, 4041387), (9, 3143301), (21, 1347129), (27, 1047767), (49, 577341), (63, 449043), (147, 192447), (189, 149681), (441, 64149), (1323, 21383)]