28774521

素因数分解:

$3^4\times {\mathrm{137}}^1\times {\mathrm{2593}}^1$

素因数の和:2742

約数の個数: 20

約数和(自身を含む): 43314612

約数和(自身を除く): 14540091

約数列:

[1, 3, 9, 27, 81, 137, 411, 1233, 2593, 3699, 7779, 11097, 23337, 70011, 210033, 355241, 1065723, 3197169, 9591507, 28774521]

約数ペア:

[(1, 28774521), (3, 9591507), (9, 3197169), (27, 1065723), (81, 355241), (137, 210033), (411, 70011), (1233, 23337), (2593, 11097), (3699, 7779)]