126953125

Appears in sequences

• Smallest k such that circle x^2 + y^2 = k passes through exactly 4n integer points.at n=21A018782
• Numbers n such that sum k/d(k) is an integer, where d(k) is the k-th divisor of n (the divisors of n are in decreasing order).at n=13A073083
• Least number which is the sum of two distinct nonzero squares in exactly n ways.at n=10A093195
• a(n) = n^5*(n+1)/2.at n=25A168351
• a(n) = n^10*(n^2 + 1)/2.at n=5A170794
• Numbers that are the sum of 2 nonzero squares in exactly 11 ways.at n=13A236711
• a(n) is the smallest nonnegative integer k where exactly n ordered pairs of positive integers (x, y) exist such that x^2 + y^2 = k.at n=22A328151
• Let n = p_1*p_2*...*p_k be the prime factorization of n, with the primes sorted in descending order. Then a(n) = 5^(p_1 - 1)*13^(p_2 - 1)*17^(p_3 - 1)*...*A002144(k)^(p_k - 1).at n=21A340388