27²⁷ - 9⁴⁰ - 3⁷⁹ is divisible by how many natural numbers less than 10?

27²⁷ - 9⁴⁰ - 3⁷⁹ = 3⁸¹ - 3⁸⁰ - 3⁷⁹ = 3⁷⁹(3² - 3 - 1) = 3⁷⁹ × 5. So the expression equals 3⁷⁹ × 5. Natural numbers less than 10 that divide this: 1, 3, 5, 9 (=3²), and 15 is >10 not relevant. The divisors less than 10 are 1, 3, 5, 9 — that's 4 values, which is more than 3.