Greatest Common Factor of 49, 42, 780

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

• Greatest Common Factor of 49, 42, 780 by common division method
• Greatest Common Factor of 49, 42, 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 49

List of positive integer factors of 49 that divides 49 without a remainder.

1,7,49

Factors of 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

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 49,42,780 . The biggest common factor number is the GCF number.
So the greatest common factor 49,42,780 is 1.

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

• GCF of 13, 81, 148
• GCF of 66, 15, 992
• GCF of 35, 13, 754
• GCF of 34, 26, 930
• GCF of 25, 17, 287

1. What is the GCF of 49, 42, 780?

Answer: GCF of 49, 42, 780 is 1.

2. How to Find the GCF of 49, 42, 780

Answer: Greatest Common Factor(GCF) of 49, 42, 780 = 1

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

Step 2: Then multiply all the prime factors GCF(49, 42, 780) = 1.