{"id":"perfect-number-sqrt-complexity","text":"`checkPerfectNumber` runs in O(sqrt(n)) time and O(1) space by harvesting paired divisors from a loop up to `isqrt(num)`.","truth_value":"IN","source":"entries/2026/06/06/perfect-number-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"perfect-number-sqrt-complexity","truth_value":"IN","reason":"premise"}]}}