Hey there!!
What are the factors of 36?
Ans :- 1 , 36 , 2 , 18 , 3 , 12 , 4 , 9 , 6
Which of these numbers add up to 15 ?
... 12 + 3 = 15
The number are 15.
They add up to 15 and both of these are factors of 36.
Hope my answer helps!!