Explanation
We want the least number of stickers that can be equally divided among 4, 10, and 16 children.
This means we want the Least Common Multiple (LCM) of 4, 10, and 16.
The prime factorizations are:
4 = 2²
10 = 2 × 5
16 = 2⁴
The LCM is the product of the highest powers of all prime factors:
LCM = 2⁴ × 5 = 16 × 5 = 80