Are you smarter than a 5th grader- Part 2

1x+1y=12 \frac {1}{x} + \frac {1}{y}= \frac{1}{2}

There are nn ordered pairs of integers (x,y) (x, y) to the above equation.

Input your answer as the sum of all nn values of x+y x + y .

Note: (a,b)(a,b) is different from (b,a)(b,a) as long asaba\neq b

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