210 is the number whose prime factors are the first four primes unrepeated.
All numbers have factors. Some factors are prime numbers, some are composite numbers. A factor that is a composite number is a composite factor.
All numbers can be factors.
The factors of nine are one, three, and nine. A factor is a whole number that when multiplied by another number equals the number you are factoring. So, the repeated multiplication for nine is 3 times 3.
All numbers have factors. Some numbers have some of the same factors as other numbers. These are known as common factors. 3 is a factor of 9. 3 is a factor of 15. 3 is a common factor of 9 and 15.
4 and 9. Factors of numbers come in pairs which means that every number ought to have an even number of factors. To have an odd number of factors, one factor pair must be a repeated number which means that only square numbers have an odd number of factors. The square numbers less than 20 are 1, 4, 9 & 16 and of these 4 & 9 have 3 factors: 4: 1, 2 & 4 9: 1, 3 & 9
There is no such number. Since there are infinitely many prime numbers, the only number that can be divided by all of them is zero. But that can also be divided by numbers with repeated factors.
30
210
2 x 3 x 5 = 30
2 x 3 x 5 = 30
2,3,5,7.2*3*5*7=210
All numbers have factors. Some factors are prime numbers, some are composite numbers. A factor that is a composite number is a composite factor.
All numbers have themselves as factors.
All numbers can be factors.
11 has no factors; it's a prime number.
23 x 29= 667
All numbers have factors. Some factors are prime numbers. A prime factor is a factor that is a prime number. A common prime factor is a prime factor that appears on the list of factors of two or more given numbers.