Greatest Common Factor of 20, 19, 247

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

• Greatest Common Factor of 20, 19, 247 by common division method
• Greatest Common Factor of 20, 19, 247 with matching the biggest common factor

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∴ GCF of numbers is 1 because of no common factors present between them.

Factors of 20

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

1,2,4,5,10,20

Factors of 19

List of positive integer factors of 19 that divides 19 without a remainder.

1,19

Factors of 247

List of positive integer factors of 247 that divides 247 without a remainder.

1,13,19,247

Greatest Common Factor

We found the factors 20,19,247 . The biggest common factor number is the GCF number.
So the greatest common factor 20,19,247 is 1.

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

• GCF of 53, 19, 224
• GCF of 56, 54, 974
• GCF of 19, 77, 167
• GCF of 83, 23, 522
• GCF of 31, 98, 655

1. What is the GCF of 20, 19, 247?

Answer: GCF of 20, 19, 247 is 1.

2. How to Find the GCF of 20, 19, 247

Answer: Greatest Common Factor(GCF) of 20, 19, 247 = 1

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

Step 2: Then multiply all the prime factors GCF(20, 19, 247) = 1.