Greatest Common Factor of 20, 66, 56, 780

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

• Greatest Common Factor of 20, 66, 56, 780 by common division method
• Greatest Common Factor of 20, 66, 56, 780 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

∴ So the GCF of the given numbers is 2 = 2

Factors of 20

List of positive integer factors of 20 that divides 20 without a remainder.

1,2,4,5,10,20

Factors of 66

List of positive integer factors of 66 that divides 66 without a remainder.

1,2,3,6,11,22,33,66

Factors of 56

List of positive integer factors of 56 that divides 56 without a remainder.

1,2,4,7,8,14,28,56

Factors of 780

List of positive integer factors of 780 that divides 780 without a remainder.

1,2,3,4,5,6,10,12,13,15,20,26,30,39,52,60,65,78,130,156,195,260,390,780

Greatest Common Factor

We found the factors 20,66,56,780 . The biggest common factor number is the GCF number.
So the greatest common factor 20,66,56,780 is 2.

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

• GCF of 68, 84, 13, 777
• GCF of 12, 39, 78, 265
• GCF of 84, 92, 87, 540
• GCF of 42, 90, 27, 900
• GCF of 27, 63, 17, 747

1. What is the GCF of 20, 66, 56, 780?

Answer: GCF of 20, 66, 56, 780 is 2.

2. How to Find the GCF of 20, 66, 56, 780

Answer: Greatest Common Factor(GCF) of 20, 66, 56, 780 = 2

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

Step 2: Then multiply all the prime factors GCF(20, 66, 56, 780) = 2.