28181277

素因数分解:

$3^4\times {\mathrm{139}}^1\times {\mathrm{2503}}^1$

素因数の和:2654

約数の個数: 20

約数和(自身を含む): 42417760

約数和(自身を除く): 14236483

約数列:

[1, 3, 9, 27, 81, 139, 417, 1251, 2503, 3753, 7509, 11259, 22527, 67581, 202743, 347917, 1043751, 3131253, 9393759, 28181277]

約数ペア:

[(1, 28181277), (3, 9393759), (9, 3131253), (27, 1043751), (81, 347917), (139, 202743), (417, 67581), (1251, 22527), (2503, 11259), (3753, 7509)]