Determine all positive numbers by which the numbers are divisible. List the numbers from smallest to largest.

a) [[$ 12 $]]

Answer: The number [[$ 12 $]] is divisible by numbers , , , , , .

b) [[$ 21 $]]

Answer: The number [[$ 21 $]] is divisible by numbers , , ,

c) [[$ 32 $]]

Answer: The number [[$ 32 $]] is divisible by numbers , , , , , .

d) [[$ 40 $]]

Answer: The number [[$ 40 $]] is divisible by numbers , , , , , , , .