Greatest Common Factor of 13, 45, 38, 42

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

• Greatest Common Factor of 13, 45, 38, 42 by common division method
• Greatest Common Factor of 13, 45, 38, 42 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 13

List of positive integer factors of 13 that divides 13 without a remainder.

1,13

Factors of 45

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

1,3,5,9,15,45

Factors of 38

List of positive integer factors of 38 that divides 38 without a remainder.

1,2,19,38

Factors of 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Greatest Common Factor

We found the factors 13,45,38,42 . The biggest common factor number is the GCF number.
So the greatest common factor 13,45,38,42 is 1.

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

• GCF of 42, 39, 67, 62
• GCF of 44, 81, 21, 40
• GCF of 17, 48, 37, 42
• GCF of 14, 73, 32, 94
• GCF of 96, 69, 57, 89

1. What is the GCF of 13, 45, 38, 42?

Answer: GCF of 13, 45, 38, 42 is 1.

2. How to Find the GCF of 13, 45, 38, 42

Answer: Greatest Common Factor(GCF) of 13, 45, 38, 42 = 1

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

Step 2: Then multiply all the prime factors GCF(13, 45, 38, 42) = 1.