2016

Number
$2016 = 2^5 \times 3^2 \times 7$

From Ratio of 2016 to Sum of Aliquot Parts:
 * $\dfrac {\sigma \left({2016}\right) - 2016} {2016} = \dfrac 9 4$

where $\sigma$ denotes the $\sigma$ (sigma) function.