The only common factor is one.
1&2
1 and 2 1x2 and 2x1
The numbers that go into 7912 are 1, 2, 4, 8
1 and 2
These numbers go into 634 evenly: 1, 2, 317, 634.
The two whole numbers that can go into 98 are 1, 2, 7, 49, and 98.
These are the whole numbers that go into 94 evenly: 1, 2, 47, 94.
These are the whole numbers that go into 214 evenly: 1, 2, 107, 214.
1 and 2
1 and 2.
1, 2, 17 and 34
1 and 2