Greatest Common Factor of 84, 42, 45, 780

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

• Greatest Common Factor of 84, 42, 45, 780 by common division method
• Greatest Common Factor of 84, 42, 45, 780 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

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

Factors of 84

List of positive integer factors of 84 that divides 84 without a remainder.

1,2,3,4,6,7,12,14,21,28,42,84

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 45

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

1,3,5,9,15,45

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 84,42,45,780 . The biggest common factor number is the GCF number.
So the greatest common factor 84,42,45,780 is 3.

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

• GCF of 25, 82, 68, 163
• GCF of 93, 67, 40, 280
• GCF of 99, 52, 40, 287
• GCF of 57, 56, 15, 149
• GCF of 44, 64, 82, 612

1. What is the GCF of 84, 42, 45, 780?

Answer: GCF of 84, 42, 45, 780 is 3.

2. How to Find the GCF of 84, 42, 45, 780

Answer: Greatest Common Factor(GCF) of 84, 42, 45, 780 = 3

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

Step 2: Then multiply all the prime factors GCF(84, 42, 45, 780) = 3.