Greatest Common Factor of 378, 217, 72, 561

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

• Greatest Common Factor of 378, 217, 72, 561 by common division method
• Greatest Common Factor of 378, 217, 72, 561 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 378

List of positive integer factors of 378 that divides 378 without a remainder.

1,2,3,6,7,9,14,18,21,27,42,54,63,126,189,378

Factors of 217

List of positive integer factors of 217 that divides 217 without a remainder.

1,7,31,217

Factors of 72

List of positive integer factors of 72 that divides 72 without a remainder.

1,2,3,4,6,8,9,12,18,24,36,72

Factors of 561

List of positive integer factors of 561 that divides 561 without a remainder.

1,3,11,17,33,51,187,561

Greatest Common Factor

We found the factors 378,217,72,561 . The biggest common factor number is the GCF number.
So the greatest common factor 378,217,72,561 is 1.

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

• GCF of 808, 947, 85, 689
• GCF of 769, 864, 92, 273
• GCF of 362, 115, 49, 300
• GCF of 702, 519, 45, 159
• GCF of 109, 805, 76, 590

1. What is the GCF of 378, 217, 72, 561?

Answer: GCF of 378, 217, 72, 561 is 1.

2. How to Find the GCF of 378, 217, 72, 561

Answer: Greatest Common Factor(GCF) of 378, 217, 72, 561 = 1

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

Step 2: Then multiply all the prime factors GCF(378, 217, 72, 561) = 1.