38220
19110,2
9555,2,2
3185,3,2,2
637,5,3,2,2
91,7,5,3,2,2
13,7,7,5,3,2,2
29 is prime. No tree.
31 is prime. No tree.
43 is prime. No tree.
12
22 2,11
38 2,19
82 2,41
22 2,11
Factor tree for 51: 51 * 1 or 17 * 3 Factor tree for 255: 255 * 1 or 51 * 5
13 is already prime. It doesn't need a tree.
164 82,2 41,2,2
406 203,2 29,7,2