They are the complex conjugate pair (10 - 70*i) and (10 + 70*i) where i is the imaginar square root of -1. an
31
26
34
15 and 4 are the factors of 120 that add up to 19.
79
Factors multiply. The same set of numbers won't add up to both 140 and 240, but 120 and 20 are factors of 240 that total 140.
146
-13
34
115
20
-43