Greatest Common Factor of 78, 42, 20, 988

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

• Greatest Common Factor of 78, 42, 20, 988 by common division method
• Greatest Common Factor of 78, 42, 20, 988 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 78

List of positive integer factors of 78 that divides 78 without a remainder.

1,2,3,6,13,26,39,78

Factors of 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 20

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

1,2,4,5,10,20

Factors of 988

List of positive integer factors of 988 that divides 988 without a remainder.

1,2,4,13,19,26,38,52,76,247,494,988

Greatest Common Factor

We found the factors 78,42,20,988 . The biggest common factor number is the GCF number.
So the greatest common factor 78,42,20,988 is 2.

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

• GCF of 52, 90, 43, 807
• GCF of 28, 30, 40, 717
• GCF of 48, 67, 20, 546
• GCF of 30, 34, 47, 741
• GCF of 74, 79, 13, 459

1. What is the GCF of 78, 42, 20, 988?

Answer: GCF of 78, 42, 20, 988 is 2.

2. How to Find the GCF of 78, 42, 20, 988

Answer: Greatest Common Factor(GCF) of 78, 42, 20, 988 = 2

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

Step 2: Then multiply all the prime factors GCF(78, 42, 20, 988) = 2.