Greatest Common Factor of 87, 78, 90, 20, 35

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

• Greatest Common Factor of 87, 78, 90, 20, 35 by common division method
• Greatest Common Factor of 87, 78, 90, 20, 35 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 78

List of positive integer factors of 78 that divides 78 without a remainder.

1,2,3,6,13,26,39,78

Factors of 90

List of positive integer factors of 90 that divides 90 without a remainder.

1,2,3,5,6,9,10,15,18,30,45,90

Factors of 20

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

1,2,4,5,10,20

Factors of 35

List of positive integer factors of 35 that divides 35 without a remainder.

1,5,7,35

Greatest Common Factor

We found the factors 87,78,90,20,35 . The biggest common factor number is the GCF number.
So the greatest common factor 87,78,90,20,35 is 1.

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

• GCF of 16, 22, 23, 87, 88
• GCF of 71, 42, 73, 73, 75
• GCF of 27, 89, 99, 93, 38
• GCF of 11, 24, 68, 88, 61
• GCF of 35, 47, 46, 99, 68

1. What is the GCF of 87, 78, 90, 20, 35?

Answer: GCF of 87, 78, 90, 20, 35 is 1.

2. How to Find the GCF of 87, 78, 90, 20, 35

Answer: Greatest Common Factor(GCF) of 87, 78, 90, 20, 35 = 1

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

Step 2: Then multiply all the prime factors GCF(87, 78, 90, 20, 35) = 1.