Greatest Common Factor of 90, 61, 10, 40

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

• Greatest Common Factor of 90, 61, 10, 40 by common division method
• Greatest Common Factor of 90, 61, 10, 40 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 61

List of positive integer factors of 61 that divides 61 without a remainder.

1,61

Factors of 10

List of positive integer factors of 10 that divides 10 without a remainder.

1,2,5,10

Factors of 40

List of positive integer factors of 40 that divides 40 without a remainder.

1,2,4,5,8,10,20,40

Greatest Common Factor

We found the factors 90,61,10,40 . The biggest common factor number is the GCF number.
So the greatest common factor 90,61,10,40 is 1.

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

• GCF of 37, 38, 34, 72
• GCF of 39, 88, 57, 17
• GCF of 20, 20, 13, 68
• GCF of 84, 37, 21, 10
• GCF of 17, 71, 96, 56

1. What is the GCF of 90, 61, 10, 40?

Answer: GCF of 90, 61, 10, 40 is 1.

2. How to Find the GCF of 90, 61, 10, 40

Answer: Greatest Common Factor(GCF) of 90, 61, 10, 40 = 1

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

Step 2: Then multiply all the prime factors GCF(90, 61, 10, 40) = 1.