Get the sum of powers of 2 for a given number + c#

I have a table with different codes. And their Id's are powers of 2. (2⁰, 2¹, 2², 2³...). Based on different conditions my application will assign a value to the "Status" variable. for ex :

Status = 272 ( which is 2⁸+ 2⁴)
Status = 21 ( Which is 2⁴+ 2²+2⁰)

If Status = 21 then my method (C#) should tell me that 21 is sum of 16 + 4 + 1.