Greatest Common Factor of 638, 990, 31

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

• Greatest Common Factor of 638, 990, 31 by common division method
• Greatest Common Factor of 638, 990, 31 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 638

List of positive integer factors of 638 that divides 638 without a remainder.

1,2,11,22,29,58,319,638

Factors of 990

List of positive integer factors of 990 that divides 990 without a remainder.

1,2,3,5,6,9,10,11,15,18,22,30,33,45,55,66,90,99,110,165,198,330,495,990

Factors of 31

List of positive integer factors of 31 that divides 31 without a remainder.

1,31

Greatest Common Factor

We found the factors 638,990,31 . The biggest common factor number is the GCF number.
So the greatest common factor 638,990,31 is 1.

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

• GCF of 798, 760, 79
• GCF of 853, 138, 92
• GCF of 740, 795, 85
• GCF of 817, 878, 38
• GCF of 853, 293, 58

1. What is the GCF of 638, 990, 31?

Answer: GCF of 638, 990, 31 is 1.

2. How to Find the GCF of 638, 990, 31

Answer: Greatest Common Factor(GCF) of 638, 990, 31 = 1

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

Step 2: Then multiply all the prime factors GCF(638, 990, 31) = 1.