Greatest Common Factor of 390, 117, 780

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

• Greatest Common Factor of 390, 117, 780 by common division method
• Greatest Common Factor of 390, 117, 780 with matching the biggest common factor

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∴ So the GCF of the given numbers is 3 x 13 = 39

Factors of 390

List of positive integer factors of 390 that divides 390 without a remainder.

1,2,3,5,6,10,13,15,26,30,39,65,78,130,195,390

Factors of 117

List of positive integer factors of 117 that divides 117 without a remainder.

1,3,9,13,39,117

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 390,117,780 . The biggest common factor number is the GCF number.
So the greatest common factor 390,117,780 is 39.

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

• GCF of 233, 761, 948
• GCF of 334, 982, 283
• GCF of 395, 180, 638
• GCF of 221, 211, 746
• GCF of 752, 352, 403

1. What is the GCF of 390, 117, 780?

Answer: GCF of 390, 117, 780 is 39.

2. How to Find the GCF of 390, 117, 780

Answer: Greatest Common Factor(GCF) of 390, 117, 780 = 39

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

Step 2: Then multiply all the prime factors GCF(390, 117, 780) = 39.