Greatest Common Factor of 30, 49, 64, 561

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

• Greatest Common Factor of 30, 49, 64, 561 by common division method
• Greatest Common Factor of 30, 49, 64, 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 30

List of positive integer factors of 30 that divides 30 without a remainder.

1,2,3,5,6,10,15,30

Factors of 49

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

1,7,49

Factors of 64

List of positive integer factors of 64 that divides 64 without a remainder.

1,2,4,8,16,32,64

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 30,49,64,561 . The biggest common factor number is the GCF number.
So the greatest common factor 30,49,64,561 is 1.

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

• GCF of 58, 95, 75, 552
• GCF of 66, 83, 67, 848
• GCF of 52, 74, 99, 306
• GCF of 98, 27, 23, 121
• GCF of 77, 43, 70, 377

1. What is the GCF of 30, 49, 64, 561?

Answer: GCF of 30, 49, 64, 561 is 1.

2. How to Find the GCF of 30, 49, 64, 561

Answer: Greatest Common Factor(GCF) of 30, 49, 64, 561 = 1

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

Step 2: Then multiply all the prime factors GCF(30, 49, 64, 561) = 1.