How can you use divisibility rules to make a factor tree for 864?

Answer 1

By using the divisibility rules, I can tell that 864 is divisible by 2, 3, 4, 6, 8 and 9. By dividing those numbers into 864 I can create factor pairs, any of which I can use to start the tree.

864

432,2

216,2,2

108,2,2,2

54,2,2,2,2

27,2,2,2,2,2

9,3,2,2,2,2,2

3,3,3,2,2,2,2,2