The GCF is 30.
The highest common factor of 60 and 210 is 30.
The greatest common factor is the highest number that divides exactly into two or more numbers. 60: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60 210: 1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, and 210. The greatest common factor for 60 and 210 is 30.
210 and 420 have a GCF of 210.
Since 210 is a factor of 420, it is automatically the GCF.
The GCF is 6.
The GCF is 70.
The GCF is 42.
The GCF is 15.
The GCF is 14.
The GCF is 105.
The GCF is 1.