472416

Appears in sequences

• Conjectured list of smallest members of fully k-sociable cycles of order r.at n=25A183026
• Numbers m such that the equation m = k*sigma(k) has more than one solution.at n=17A337873
• a(n) is the least k such that the average number of bi-unitary divisors of {1..k} is >= n.at n=10A344273
• Let S(n)=sigma(n)/3. Numbers k such that S^m(k)=k, 1/3-sociable numbers (of any order).at n=17A356548