What is the Greatest Common Factor of 21798 and 21812?
Greatest common factor (GCF) of 21798 and 21812 is 14.
GCF(21798,21812) = 14
We will now calculate the prime factors of 21798 and 21812, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21798 and 21812.
How to find the GCF of 21798 and 21812?
We will first find the prime factorization of 21798 and 21812. After we will calculate the factors of 21798 and 21812 and find the biggest common factor number .
Step-1: Prime Factorization of 21798
Prime factors of 21798 are 2, 3, 7, 173. Prime factorization of 21798 in exponential form is:
21798 = 21 × 32 × 71 × 1731
Step-2: Prime Factorization of 21812
Prime factors of 21812 are 2, 7, 19, 41. Prime factorization of 21812 in exponential form is:
21812 = 22 × 71 × 191 × 411
Step-3: Factors of 21798
List of positive integer factors of 21798 that divides 21798 without a remainder.
1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 173, 346, 519, 1038, 1211, 1557, 2422, 3114, 3633, 7266, 10899
Step-4: Factors of 21812
List of positive integer factors of 21812 that divides 21798 without a remainder.
1, 2, 4, 7, 14, 19, 28, 38, 41, 76, 82, 133, 164, 266, 287, 532, 574, 779, 1148, 1558, 3116, 5453, 10906
Final Step: Biggest Common Factor Number
We found the factors and prime factorization of 21798 and 21812. The biggest common factor number is the GCF number.
So the greatest common factor 21798 and 21812 is 14.
Also check out the Least Common Multiple of 21798 and 21812
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