Skip to content / Đến nội dung
ThichHocToan.com

AMC10 2027 - Self-practice Set 5 Question 9

AMC10 · AMC10 2027 - Self-practice Set 5

Question 9

Let $S=1!\cdot2!\cdot3!\cdot4!\cdot5!\cdot6!\cdot7!\cdot8!\cdot9!\cdot10!$. How many positive divisors of $S$ are perfect squares?
  1. $1600$
  2. $1836$
  3. $1924$
  4. $2038$
  5. $2160$