1) 12 = 2 * 2 * 3 = 2^2 * 3
2) 42 = 2 * 3 * 7
3) 216 = 2 * 2 * 2 * 3 * 3 * 3 = 2^3 * 3^3
4) 450 = 2 * 3 * 3 * 5 * 5 = 2 * 3^2 * 5^2
5) 920 = 2 * 2 * 23 * 5 = 2^2 * 5 * 23
6) 2280 = 2 * 2 * 2 * 3 * 5 * 19 = 2^3 * 3 * 5 * 19
7) 10850 = 2 * 5 * 5 * 43 * 5 = 2 * 5^2 * 43