Greatest Common Factor of 765, 687, 420

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

• Greatest Common Factor of 765, 687, 420 by common division method
• Greatest Common Factor of 765, 687, 420 with matching the biggest common factor

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∴ So the GCF of the given numbers is 3 = 3

Factors of 765

List of positive integer factors of 765 that divides 765 without a remainder.

1,3,5,9,15,17,45,51,85,153,255,765

Factors of 687

List of positive integer factors of 687 that divides 687 without a remainder.

1,3,229,687

Factors of 420

List of positive integer factors of 420 that divides 420 without a remainder.

1,2,3,4,5,6,7,10,12,14,15,20,21,28,30,35,42,60,70,84,105,140,210,420

Greatest Common Factor

We found the factors 765,687,420 . The biggest common factor number is the GCF number.
So the greatest common factor 765,687,420 is 3.

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

• GCF of 718, 995, 163
• GCF of 823, 654, 121
• GCF of 427, 958, 574
• GCF of 419, 586, 417
• GCF of 500, 444, 923

1. What is the GCF of 765, 687, 420?

Answer: GCF of 765, 687, 420 is 3.

2. How to Find the GCF of 765, 687, 420

Answer: Greatest Common Factor(GCF) of 765, 687, 420 = 3

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

Step 2: Then multiply all the prime factors GCF(765, 687, 420) = 3.