152352

Appears in sequences

• Primitive 1+prime power perfect numbers: if n=Product p_i^r_i then 1PPsigma(n)= Product {Sum p_i^r_i, 1<=s_i<=r_i, s_i is one or prime} 1PPsigma(n)=2*n.at n=2A095682
• a(n) = n^2*(n+1)^2/2.at n=23A163102
• Numbers with prime factorization p^2*q^2*r^5 where p, q, and r are distinct primes.at n=13A190114
• Indices of consecutive maxima in A214123.at n=19A214124
• The Dedekind psi function value of the smallest cube divisible by n.at n=45A392169
• The Dedekind psi function value of the smallest cubefull number that is a multiple of n.at n=45A392171