Greatest Common Factor of 28, 770, 420

Greatest common factor or Greatest common divisor (GCD) can be calculated in two ways

• Greatest Common Factor of 28, 770, 420 by common division method
• Greatest Common Factor of 28, 770, 420 with matching the biggest common factor

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∴ So the GCF of the given numbers is 2 x 7 = 14

Factors of 28

List of positive integer factors of 28 that divides 28 without a remainder.

1,2,4,7,14,28

Factors of 770

List of positive integer factors of 770 that divides 770 without a remainder.

1,2,5,7,10,11,14,22,35,55,70,77,110,154,385,770

Factors of 420

List of positive integer factors of 420 that divides 420 without a remainder.

1,2,3,4,5,6,7,10,12,14,15,20,21,28,30,35,42,60,70,84,105,140,210,420

Greatest Common Factor

We found the factors 28,770,420 . The biggest common factor number is the GCF number.
So the greatest common factor 28,770,420 is 14.

Here are some samples of GCF of two or more Numbers calculations.

• GCF of 26, 369, 981
• GCF of 26, 517, 927
• GCF of 55, 914, 542
• GCF of 98, 744, 714
• GCF of 60, 153, 609

1. What is the GCF of 28, 770, 420?

Answer: GCF of 28, 770, 420 is 14.

2. How to Find the GCF of 28, 770, 420

Answer: Greatest Common Factor(GCF) of 28, 770, 420 = 14

Step 1: Divide all the numbers with common prime numbers having remainder zero.

Step 2: Then multiply all the prime factors GCF(28, 770, 420) = 14.