Greatest Common Factor of 21, 87, 50, 678

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

• Greatest Common Factor of 21, 87, 50, 678 by common division method
• Greatest Common Factor of 21, 87, 50, 678 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 21

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

1,3,7,21

Factors of 87

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

1,3,29,87

Factors of 50

List of positive integer factors of 50 that divides 50 without a remainder.

1,2,5,10,25,50

Factors of 678

List of positive integer factors of 678 that divides 678 without a remainder.

1,2,3,6,113,226,339,678

Greatest Common Factor

We found the factors 21,87,50,678 . The biggest common factor number is the GCF number.
So the greatest common factor 21,87,50,678 is 1.

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

• GCF of 79, 20, 75, 158
• GCF of 57, 33, 62, 461
• GCF of 34, 46, 56, 911
• GCF of 23, 91, 18, 593
• GCF of 76, 82, 59, 272

1. What is the GCF of 21, 87, 50, 678?

Answer: GCF of 21, 87, 50, 678 is 1.

2. How to Find the GCF of 21, 87, 50, 678

Answer: Greatest Common Factor(GCF) of 21, 87, 50, 678 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 87, 50, 678) = 1.