Greatest Common Factor of 45, 51, 820

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

• Greatest Common Factor of 45, 51, 820 by common division method
• Greatest Common Factor of 45, 51, 820 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 45

List of positive integer factors of 45 that divides 45 without a remainder.

1,3,5,9,15,45

Factors of 51

List of positive integer factors of 51 that divides 51 without a remainder.

1,3,17,51

Factors of 820

List of positive integer factors of 820 that divides 820 without a remainder.

1,2,4,5,10,20,41,82,164,205,410,820

Greatest Common Factor

We found the factors 45,51,820 . The biggest common factor number is the GCF number.
So the greatest common factor 45,51,820 is 1.

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

• GCF of 46, 92, 917
• GCF of 28, 99, 132
• GCF of 58, 22, 314
• GCF of 19, 89, 431
• GCF of 17, 35, 762

1. What is the GCF of 45, 51, 820?

Answer: GCF of 45, 51, 820 is 1.

2. How to Find the GCF of 45, 51, 820

Answer: Greatest Common Factor(GCF) of 45, 51, 820 = 1

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

Step 2: Then multiply all the prime factors GCF(45, 51, 820) = 1.