Factors, multiples, primes

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Across
  1. 3. The sum of the first 4 prime numbers
  2. 6. The only even prime number
  3. 8. The number of multiples a given number has
  4. 10. The greatest factor of 11
  5. 11. Number which has only two factors: 1 and itself
  6. 12. The greatest common factor of 30 and 10
  7. 13. The number of factors of 4
  8. 14. A number which has more than 2 factors
Down
  1. 1. The result of multiplying a number by an integer
  2. 2. A number that divides exactly into another number
  3. 4. The least common multiple of 9 and 2
  4. 5. animal species which uses prime numbers in their cycles
  5. 6. The sum of all the factors of 19
  6. 7. A factor of all the numbers
  7. 9. The smallest multiple of 9