28886787

素因数分解:

$3^4\times {\mathrm{503}}^1\times {\mathrm{709}}^1$

素因数の和:1224

約数の個数: 20

約数和(自身を含む): 43298640

約数和(自身を除く): 14411853

約数列:

[1, 3, 9, 27, 81, 503, 709, 1509, 2127, 4527, 6381, 13581, 19143, 40743, 57429, 356627, 1069881, 3209643, 9628929, 28886787]

約数ペア:

[(1, 28886787), (3, 9628929), (9, 3209643), (27, 1069881), (81, 356627), (503, 57429), (709, 40743), (1509, 19143), (2127, 13581), (4527, 6381)]