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4 factors they are 1,3,7 and 21

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Q: How many factors does the number 21 have?
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Related questions

How many factors has the number 21?

The factors of 21 are :1,3,7,21


What number has more factors than 21?

The number 21 has only four factors: 1, 3, 7, and 21. Many number have more than four factors. Among them are 1x2x3x4x5 = 120.


What are two factors of a number if 21 is one of the factors?

If 21 is a factor of a number, then the factors of 21 must also be factors. So 3 and 7


What is the composite of 21?

A composite number is a number that has more than two factors. The factors of 21 are 1, 3, 7, and 21. Therefore, 21 is a composite number.


What are the proper factors of the number 21?

The factors of 21 are: 1, 3, 7, 21.


What are all of the factors for the number 21?

The factors of 21 are: 1, 3, 7, 21.


Is there a prime number that is a multiple of 21?

No, it is not possible. Every multiple of 21 is a composite number. 21 is a composite number and its factors are 1, 3, 7 and 21(4 factors). Any multiple of 21 must have all the factors of 21. So, every multiple of 21 has at least 4 factors. And a prime number has only two factors so, any multiple of 21 can't be prime.


The factors of a number are 1 3 7 and 21 what is the number?

21


What is a number that has exactly eight factors including 21 351 and itself?

There cannot be any. If the number has 21 and 351 as factors then it already has 16 factors.


What are the common factors number 21?

The factors of 21 are 1, 3, 7 and 21. For them to be common, they need to be compared to another set of factors.


What factors of a number equal 21?

Two factors of 110, 11 and 10, equal 21 if you add them.


What are common factors with a given number of 21?

The factors of 21 are 1, 3, 7 and 21. To be common, they need to be compared to another set of factors.


Is 21 and 27 prime and composite numbers?

A prime number has exactly two factors, 1 and the number itself. The factors of 21 are 1, 3, 7, and 21, and the factors of 27 are 1, 3, 9, and 27. Since 21 and 27 have more than 2 factors, they are composite numbers.


How many factors does the number 63 have?

Six: 1 3 7 9 21 63.


Is the prime number 21 is a prime number?

21 is a composite number, not a prime, having prime factors 3x7.


List all the factors of 21 is the number 21 prime or composite?

The factors of 21 are 1, 3, 7, and 21 which means that 21 is composite.


List all the factors of 21?

Factors are numbers you can multiply together to get another number. Therefore, all the factors of 21 are as follows: 1,3,7,21.


Is 19 21 or 23 composite or prime?

19 is a prime number. Its only factors are 1 and 19. 21 is a composite number. Its factors are 1, 3, 7, and 21. 23 is a prime number. Its only factors are 1 and 23.


Can odd numbers be composite?

If an odd number has more than two factors then it is a composite number but if it has only two factors then it is a prime number. Although all prime numbers are odd except for 2 many more odd numbers are composite numbers having more than two factors as for example 21 is an odd number whose factors are 1, 3, 7 and 21.


How many factors in 21?

four factors: 1, 3, 7, 21


What are the factors and prime factors of 17 and 21?

17 is a prime number. It is only evenly divisible by itself and one.The factors of 21 are: 1, 3, 7, and 21.The prime factors of 21 are: 3 and 7.


Which number has the most factors 19 23 21 25?

21


What number has the most factors 19 21 23 or 25?

21


Which of the number 19 21 23 and 25 has the most factors?

21


What are the factors for number 63?

The factors for the number 63 are 1, 3, 7, 9, 21, and 63.