Solutions by everydaycalculation.com
The GCF of 3900 and 640 is 20.
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: 7800 & 1280 1950 & 320 780 & 128 7800 & 640 3900 & 1280 3900 & 1920 3900 & 3200 3900 & 4480
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