Greatest Common Factor of 87, 89, 28, 780

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

• Greatest Common Factor of 87, 89, 28, 780 by common division method
• Greatest Common Factor of 87, 89, 28, 780 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 87

List of positive integer factors of 87 that divides 87 without a remainder.

1,3,29,87

Factors of 89

List of positive integer factors of 89 that divides 89 without a remainder.

1,89

Factors of 28

List of positive integer factors of 28 that divides 28 without a remainder.

1,2,4,7,14,28

Factors of 780

List of positive integer factors of 780 that divides 780 without a remainder.

1,2,3,4,5,6,10,12,13,15,20,26,30,39,52,60,65,78,130,156,195,260,390,780

Greatest Common Factor

We found the factors 87,89,28,780 . The biggest common factor number is the GCF number.
So the greatest common factor 87,89,28,780 is 1.

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

• GCF of 69, 17, 43, 466
• GCF of 56, 48, 23, 914
• GCF of 74, 45, 63, 496
• GCF of 19, 67, 49, 690
• GCF of 57, 23, 32, 293

1. What is the GCF of 87, 89, 28, 780?

Answer: GCF of 87, 89, 28, 780 is 1.

2. How to Find the GCF of 87, 89, 28, 780

Answer: Greatest Common Factor(GCF) of 87, 89, 28, 780 = 1

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

Step 2: Then multiply all the prime factors GCF(87, 89, 28, 780) = 1.