Three schools are competing in a sport carnival. Each school has a different coloured sport uniform. The number of year 8 students competing are 162 with green uniform, 108 with red uniform and 144 with a blue uniform. All the year 8 students are to be split up into equal sized teams. What is the largest team size so every year 8 student is in a team of students all from there own school? How many of these year 8 teams will be formed from each school?