Greatest Common Factor of 787, 721, 20

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

• Greatest Common Factor of 787, 721, 20 by common division method
• Greatest Common Factor of 787, 721, 20 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 787

List of positive integer factors of 787 that divides 787 without a remainder.

1,787

Factors of 721

List of positive integer factors of 721 that divides 721 without a remainder.

1,7,103,721

Factors of 20

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

1,2,4,5,10,20

Greatest Common Factor

We found the factors 787,721,20 . The biggest common factor number is the GCF number.
So the greatest common factor 787,721,20 is 1.

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

• GCF of 679, 137, 78
• GCF of 650, 737, 44
• GCF of 480, 628, 79
• GCF of 476, 513, 20
• GCF of 850, 176, 14

1. What is the GCF of 787, 721, 20?

Answer: GCF of 787, 721, 20 is 1.

2. How to Find the GCF of 787, 721, 20

Answer: Greatest Common Factor(GCF) of 787, 721, 20 = 1

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

Step 2: Then multiply all the prime factors GCF(787, 721, 20) = 1.