Greatest Common Factor of 90, 45, 57, 47

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

• Greatest Common Factor of 90, 45, 57, 47 by common division method
• Greatest Common Factor of 90, 45, 57, 47 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 90

List of positive integer factors of 90 that divides 90 without a remainder.

1,2,3,5,6,9,10,15,18,30,45,90

Factors of 45

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

1,3,5,9,15,45

Factors of 57

List of positive integer factors of 57 that divides 57 without a remainder.

1,3,19,57

Factors of 47

List of positive integer factors of 47 that divides 47 without a remainder.

1,47

Greatest Common Factor

We found the factors 90,45,57,47 . The biggest common factor number is the GCF number.
So the greatest common factor 90,45,57,47 is 1.

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

• GCF of 55, 81, 26, 39
• GCF of 31, 30, 48, 44
• GCF of 65, 98, 45, 46
• GCF of 65, 56, 41, 48
• GCF of 66, 75, 28, 84

1. What is the GCF of 90, 45, 57, 47?

Answer: GCF of 90, 45, 57, 47 is 1.

2. How to Find the GCF of 90, 45, 57, 47

Answer: Greatest Common Factor(GCF) of 90, 45, 57, 47 = 1

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

Step 2: Then multiply all the prime factors GCF(90, 45, 57, 47) = 1.