Greatest Common Factor of 90, 91, 63, 38, 70

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

• Greatest Common Factor of 90, 91, 63, 38, 70 by common division method
• Greatest Common Factor of 90, 91, 63, 38, 70 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 91

List of positive integer factors of 91 that divides 91 without a remainder.

1,7,13,91

Factors of 63

List of positive integer factors of 63 that divides 63 without a remainder.

1,3,7,9,21,63

Factors of 38

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

1,2,19,38

Factors of 70

List of positive integer factors of 70 that divides 70 without a remainder.

1,2,5,7,10,14,35,70

Greatest Common Factor

We found the factors 90,91,63,38,70 . The biggest common factor number is the GCF number.
So the greatest common factor 90,91,63,38,70 is 1.

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

• GCF of 97, 47, 89, 84, 66
• GCF of 61, 95, 77, 39, 82
• GCF of 17, 11, 24, 57, 10
• GCF of 77, 98, 20, 18, 97
• GCF of 66, 52, 79, 65, 78

1. What is the GCF of 90, 91, 63, 38, 70?

Answer: GCF of 90, 91, 63, 38, 70 is 1.

2. How to Find the GCF of 90, 91, 63, 38, 70

Answer: Greatest Common Factor(GCF) of 90, 91, 63, 38, 70 = 1

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

Step 2: Then multiply all the prime factors GCF(90, 91, 63, 38, 70) = 1.