The missing value in the following figure is ____________

12-8 =4Divisors of 12  are 1,2,3,4,6,12 (6)Dovisors of 8 are 1,2,4,8,  (4)Product = 6×4=24 7-4=3Divisors of  7   are 1,2    (2)Dovisors of 4   are 1,2, 4,  (3)Product = 2×3=62-1=1Divisors of   2  are 1,2,  (2)Dovisors of  1 are 1   (1)Product = 2×1=2 5-3 =2Divisors of  5    are 1, 5  (2)Dovisors of  3 are 1 ,3   (2)Product=4 =24=16