Greatest Common Factor of 45, 20, 64, 409

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

• Greatest Common Factor of 45, 20, 64, 409 by common division method
• Greatest Common Factor of 45, 20, 64, 409 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 45

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

1,3,5,9,15,45

Factors of 20

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

1,2,4,5,10,20

Factors of 64

List of positive integer factors of 64 that divides 64 without a remainder.

1,2,4,8,16,32,64

Factors of 409

List of positive integer factors of 409 that divides 409 without a remainder.

1,409

Greatest Common Factor

We found the factors 45,20,64,409 . The biggest common factor number is the GCF number.
So the greatest common factor 45,20,64,409 is 1.

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

• GCF of 37, 82, 92, 945
• GCF of 35, 16, 17, 510
• GCF of 44, 14, 54, 505
• GCF of 49, 30, 25, 625
• GCF of 46, 11, 76, 351

1. What is the GCF of 45, 20, 64, 409?

Answer: GCF of 45, 20, 64, 409 is 1.

2. How to Find the GCF of 45, 20, 64, 409

Answer: Greatest Common Factor(GCF) of 45, 20, 64, 409 = 1

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

Step 2: Then multiply all the prime factors GCF(45, 20, 64, 409) = 1.