Greatest Common Factor of 70, 20, 88, 405

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

• Greatest Common Factor of 70, 20, 88, 405 by common division method
• Greatest Common Factor of 70, 20, 88, 405 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 70

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

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

Factors of 20

List of positive integer factors of 20 that divides 20 without a remainder.

1,2,4,5,10,20

Factors of 88

List of positive integer factors of 88 that divides 88 without a remainder.

1,2,4,8,11,22,44,88

Factors of 405

List of positive integer factors of 405 that divides 405 without a remainder.

1,3,5,9,15,27,45,81,135,405

Greatest Common Factor

We found the factors 70,20,88,405 . The biggest common factor number is the GCF number.
So the greatest common factor 70,20,88,405 is 1.

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

• GCF of 65, 88, 17, 271
• GCF of 99, 59, 32, 635
• GCF of 67, 72, 41, 301
• GCF of 37, 90, 39, 617
• GCF of 27, 63, 29, 606

1. What is the GCF of 70, 20, 88, 405?

Answer: GCF of 70, 20, 88, 405 is 1.

2. How to Find the GCF of 70, 20, 88, 405

Answer: Greatest Common Factor(GCF) of 70, 20, 88, 405 = 1

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

Step 2: Then multiply all the prime factors GCF(70, 20, 88, 405) = 1.