686
343,2
49,7,2
7,7,7,2
686 343,2 49,7,2 7,7,7,2
The HCF of 686 is 686. But it's a factor as opposed to a common factor because there's only one number.
The GCF is 2.
1 x 686 2 x 343 7 x 98 14 x 49
IT IS PRIME there is no factor tree
factor tree of 216
Factor tree of 204
The greatest common factors of 196 and 686 is 98. Factors of 686 are 1,2,7,14,49,98,343,686 Factors of 196 are 1,2,4,7,14,28,49,98,196 GCD=98
The factor tree of 50:5025,25,5,25025,25,5,2
21
83 is prime. No tree.
The prime factor tree of 280 is:140,270,2,235,2,2,27,5,2,2,2