Need kona po ngayun plss po

Answer:
1. Common factors = 1,2,4,8,16
GCF = 16
2. Common factors = 1,2,4
GCF = 4
3.Common factors = 1,3
GCF = 3
4.Common factors = 1,2,5,10
GCF = 10
5.Common factors = 1,2,4
GCF = 4