All the factors are found when the next value is part of a ... Composite numbers are not prime numbers. 20 is a composite number and has six factors (1, 2, 4, 5, 10, 20). . 1 has one factor and ...

Start with 200 and draw two branches to give a factor pair. 20 and 10 are used here. Next find factor pairs for each of 20 and 10. 20 is 2 × 10 and 10 is 2 × 5. 10 can be split into the factor ...