Greatest Common Factor of 20, 80, 38, 438

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

• Greatest Common Factor of 20, 80, 38, 438 by common division method
• Greatest Common Factor of 20, 80, 38, 438 with matching the biggest common factor

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∴ 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 80

List of positive integer factors of 80 that divides 80 without a remainder.

1,2,4,5,8,10,16,20,40,80

Factors of 38

List of positive integer factors of 38 that divides 38 without a remainder.

1,2,19,38

Factors of 438

List of positive integer factors of 438 that divides 438 without a remainder.

1,2,3,6,73,146,219,438

Greatest Common Factor

We found the factors 20,80,38,438 . The biggest common factor number is the GCF number.
So the greatest common factor 20,80,38,438 is 2.

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

• GCF of 67, 91, 15, 642
• GCF of 14, 89, 75, 766
• GCF of 93, 30, 89, 117
• GCF of 83, 26, 53, 248
• GCF of 99, 42, 20, 179

1. What is the GCF of 20, 80, 38, 438?

Answer: GCF of 20, 80, 38, 438 is 2.

2. How to Find the GCF of 20, 80, 38, 438

Answer: Greatest Common Factor(GCF) of 20, 80, 38, 438 = 2

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

Step 2: Then multiply all the prime factors GCF(20, 80, 38, 438) = 2.