[tex]18 - 25 | 2 \\ 09 - 25 |3 \\ 03 - 25 |3 \\ 01 - 25 |5 \\ 01 - 05 |5 \\ 01 - 01 | \\ \\ 2 \times {3}^{2} \times {5}^{2} = 450[/tex]
