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To get the Greates Common Factor (GCF) of 1626 and 452 we need to factor each value first and then we choose all the copies of factors and multiply them:
|1626: ||2|| ||3|| ||271|
|452: ||2||2|| ||113|| |
|GCF: ||2|| || || || |
The Greates Common Factor (GCF) is: 2