28390905

素因数分解:

$3^6\times 5^1\times {\mathrm{7789}}^1$

素因数の和:7812

約数の個数: 28

約数和(自身を含む): 51086820

約数和(自身を除く): 22695915

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 729, 1215, 3645, 7789, 23367, 38945, 70101, 116835, 210303, 350505, 630909, 1051515, 1892727, 3154545, 5678181, 9463635, 28390905]

約数ペア:

[(1, 28390905), (3, 9463635), (5, 5678181), (9, 3154545), (15, 1892727), (27, 1051515), (45, 630909), (81, 350505), (135, 210303), (243, 116835), (405, 70101), (729, 38945), (1215, 23367), (3645, 7789)]