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HKIMO 2026 THPT (Grades 10–12 shared) National Preliminary Set 01 Question 11

HKIMO · HKIMO 2026 THPT (Grades 10–12 shared) National Preliminary Set 01

Question 11

Find the number of positive factors of 540.
  1. 24
  2. 22
  3. 18
  4. 20