Greatest Common Factor of 80, 15, 63, 40

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

• Greatest Common Factor of 80, 15, 63, 40 by common division method
• Greatest Common Factor of 80, 15, 63, 40 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 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 15

List of positive integer factors of 15 that divides 15 without a remainder.

1,3,5,15

Factors of 63

List of positive integer factors of 63 that divides 63 without a remainder.

1,3,7,9,21,63

Factors of 40

List of positive integer factors of 40 that divides 40 without a remainder.

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

Greatest Common Factor

We found the factors 80,15,63,40 . The biggest common factor number is the GCF number.
So the greatest common factor 80,15,63,40 is 1.

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

• GCF of 73, 42, 11, 30
• GCF of 29, 50, 38, 36
• GCF of 47, 35, 24, 81
• GCF of 47, 73, 48, 64
• GCF of 58, 37, 71, 41

1. What is the GCF of 80, 15, 63, 40?

Answer: GCF of 80, 15, 63, 40 is 1.

2. How to Find the GCF of 80, 15, 63, 40

Answer: Greatest Common Factor(GCF) of 80, 15, 63, 40 = 1

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

Step 2: Then multiply all the prime factors GCF(80, 15, 63, 40) = 1.