Upcoming lesson · 55 of 98
AMC 8
Sum of Factors
This lesson is part of the course plan. Its explanations and practice are being prepared.
What this lesson will cover
- Compute the sum of positive divisors from a prime factorization
- Apply the sum-of-divisors formula to a contest problem
- Distinguish the sum-of-divisors formula from the count-of-divisors formula
40 minutes planned · Difficulty 5/10