by using a prime factor tree
the prime factorization
2 and 3 are prime factors of 24 but although 4 is a factor of 24 it is not a prime factor because it is a composite number
19 is a prime number, so it has no prime factorization.
A factor free is a diagram showing the prime factorization of a number.
If the prime factorization contains a 5 and a 7, 35 is a factor.
If completed correctly, the bottom branch of a factor tree will be the prime factorization of the number at the top.
Each composite number has its own unique prime factorization. The largest number in that factorization would be the largest prime factor. It will never be more than half of the original number.
11 is a prime number. Its only prime factor is 11.
40 is simply a number. It does not and cannot explain prime factorisation!
That's a factor string of 980; it is not the prime factorization. 4 and 49 aren't prime.
23 is prime.
Prime Factorization of 22 is a prime number, so it does not have a prime factorization.