1950625

Appears in sequences

• Smallest n-hyperperfect number: m such that m=n(sigma(m)-m-1)+1; or 0 if no such number exists.at n=3A007594
• Largest terms a(n) forming a self-convolution 5th power of an integer sequence (A132840) such that: a(n) <= 5*a(n-1) for n>0 with a(0)=1.at n=9A132839
• Nonsemiprime hyperperfect numbers.at n=12A133447
• 4-hyperperfect numbers: n = 4*(sigma(n)-n-1) + 1.at n=0A220290