Solutions by everydaycalculation.com
The GCF of 20 and 642 is 2.
MathStep (Works offline)
Download our mobile app and learn how to find GCF of upto four numbers in your own time:
Android and iPhone/ iPad
Find HCF of: 40 & 1284 10 & 321 60 & 1926 100 & 3210 140 & 4494 40 & 642 20 & 1284 60 & 642 20 & 1926 100 & 642 20 & 3210 140 & 642 20 & 4494
Enter two numbers separate by comma. To find GCF of more than two numbers, click here.
The greatest common factor (GCF) is also known as greatest common divisor (GCD) or highest common factor (HCF).
© everydaycalculation.com