Greatest Common Factor of 840, 391, 920, 207

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

• Greatest Common Factor of 840, 391, 920, 207 by common division method
• Greatest Common Factor of 840, 391, 920, 207 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 840

List of positive integer factors of 840 that divides 840 without a remainder.

1,2,3,4,5,6,7,8,10,12,14,15,20,21,24,28,30,35,40,42,56,60,70,84,105,120,140,168,210,280,420,840

Factors of 391

List of positive integer factors of 391 that divides 391 without a remainder.

1,17,23,391

Factors of 920

List of positive integer factors of 920 that divides 920 without a remainder.

1,2,4,5,8,10,20,23,40,46,92,115,184,230,460,920

Factors of 207

List of positive integer factors of 207 that divides 207 without a remainder.

1,3,9,23,69,207

Greatest Common Factor

We found the factors 840,391,920,207 . The biggest common factor number is the GCF number.
So the greatest common factor 840,391,920,207 is 1.

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

• GCF of 131, 678, 937, 147
• GCF of 694, 814, 480, 798
• GCF of 802, 217, 627, 476
• GCF of 285, 754, 509, 928
• GCF of 861, 277, 568, 601

1. What is the GCF of 840, 391, 920, 207?

Answer: GCF of 840, 391, 920, 207 is 1.

2. How to Find the GCF of 840, 391, 920, 207

Answer: Greatest Common Factor(GCF) of 840, 391, 920, 207 = 1

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

Step 2: Then multiply all the prime factors GCF(840, 391, 920, 207) = 1.