Greatest Common Factor of 16, 80, 21, 784

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

• Greatest Common Factor of 16, 80, 21, 784 by common division method
• Greatest Common Factor of 16, 80, 21, 784 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 16

List of positive integer factors of 16 that divides 16 without a remainder.

1,2,4,8,16

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 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 784

List of positive integer factors of 784 that divides 784 without a remainder.

1,2,4,7,8,14,16,28,49,56,98,112,196,392,784

Greatest Common Factor

We found the factors 16,80,21,784 . The biggest common factor number is the GCF number.
So the greatest common factor 16,80,21,784 is 1.

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

• GCF of 29, 63, 30, 247
• GCF of 21, 41, 46, 985
• GCF of 99, 66, 17, 309
• GCF of 96, 38, 86, 131
• GCF of 69, 20, 58, 572

1. What is the GCF of 16, 80, 21, 784?

Answer: GCF of 16, 80, 21, 784 is 1.

2. How to Find the GCF of 16, 80, 21, 784

Answer: Greatest Common Factor(GCF) of 16, 80, 21, 784 = 1

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

Step 2: Then multiply all the prime factors GCF(16, 80, 21, 784) = 1.