28028655

素因数分解:

$3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{4481}}^1$

素因数の和:4631

約数の個数: 24

約数和(自身を含む): 48943440

約数和(自身を除く): 20914785

約数列:

[1, 3, 5, 9, 15, 45, 139, 417, 695, 1251, 2085, 4481, 6255, 13443, 22405, 40329, 67215, 201645, 622859, 1868577, 3114295, 5605731, 9342885, 28028655]

約数ペア:

[(1, 28028655), (3, 9342885), (5, 5605731), (9, 3114295), (15, 1868577), (45, 622859), (139, 201645), (417, 67215), (695, 40329), (1251, 22405), (2085, 13443), (4481, 6255)]