Greatest Common Factor of 20, 42, 248

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

• Greatest Common Factor of 20, 42, 248 by common division method
• Greatest Common Factor of 20, 42, 248 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 42

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

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

Factors of 248

List of positive integer factors of 248 that divides 248 without a remainder.

1,2,4,8,31,62,124,248

Greatest Common Factor

We found the factors 20,42,248 . The biggest common factor number is the GCF number.
So the greatest common factor 20,42,248 is 2.

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

• GCF of 66, 13, 206
• GCF of 27, 44, 850
• GCF of 11, 46, 565
• GCF of 71, 98, 540
• GCF of 80, 27, 840

1. What is the GCF of 20, 42, 248?

Answer: GCF of 20, 42, 248 is 2.

2. How to Find the GCF of 20, 42, 248

Answer: Greatest Common Factor(GCF) of 20, 42, 248 = 2

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

Step 2: Then multiply all the prime factors GCF(20, 42, 248) = 2.