304 is.
152
304 ÷ 2 = 152, which is even, so 152 is the largest even factor (not equal to 304)
The GCF is 304.
152
Use a factor tree. 304 152,2 76,2,2 38,2,2,2 19,2,2,2,2
304 152,2 76,2,2 38,2,2,2 19,2,2,2,2
304 152,2 76,2,2 38,2,2,2 19,2,2,2,2
Yes. Factor pairs are always repeated across pairs since factor pairs are certain kinds of pairs.
The GCF of 304 and 980 is 4.
There are seven factor pairs:448,1224,2112,464,756,832,1428,16
Sixteen factor pairs.