Number TheorySuperchallengeHard Number Theory ShareHard Number Theory · Superchallenge problemFor how many integers nnn with 1≤n≤20261 \le n \le 20261≤n≤2026 does φ(n)\varphi(n)φ(n) divide nnn? (Here φ\varphiφ is Euler's totient function.)Check Show answer Walk through it step by step Practice more like this Review this concept