1 1 36  = 38 //1  1    2*2*3*3
1 2 18	= 21 //1  2    2*3*3
1 3 12	= 16 //1  3    2*2*3
1 4 9	= 14 //1  2*2  3*3
1 6 6	= 13 //1  2*3  2*3

2 2 9   = 13 //2 2 3*3
2 3 6   = 11 //2 3 2*3

3 3 4   = 10 //3 3 2*2