If it's any three numbers - there are huge number of solutions !
-15
26
The numbers are -2 and 28
The numbers are 22, 24 and 26.
-82
-15
26
1 and 28. 2+27 3+26 4+25 and so on (even after the second numbers turns negative it continues.... forever...)
26
-26
The numbers are -2 and 28
13, 26, 39 are three numbers with a GCF of 13.
15
79
13 and 26 26 and 39 13 and 39
The numbers are 22, 24 and 26.
1, 2, 13, 26