1. خانه
  2. پرسش‌ها
  3. Divisor Square Sum
دشواری: 50%

Divisor Square Sum

For a positive integer n, let σ2(n) be the sum of the squares of its divisors. For example,

σ2(10) = 1 + 4 + 25 + 100 = 130.

Find the sum of all n, 0 < n < 64,000,000 such that σ2(n) is a perfect square.

ارسال پاسخ