47360

Appears in sequences

• Numbers j such that sigma(sigma(j)) = k*j for some k.at n=31A019278
• Let sigma_m (n) be result of applying sum-of-divisors function m times to n; call n (m,k)-perfect if sigma_m (n) = k*n; sequence gives the (2,7)-perfect numbers.at n=2A019284
• A convolution triangle of numbers obtained from A036070.at n=41A030526
• Unitary-sigma sigma multiply perfect numbers: numbers k such that A061765(k) = m*k for some integer m.at n=40A045795
• z(sigma(n)) = 2n, where z(n) = A048146.at n=3A063885
• Numbers k such that the sum of 2nd, 3rd, 4th and 5th powers of divisors of k are divisible by sum of divisors of k.at n=14A074632
• Expansion of a level 11 weight 7 multiplicative modular form in powers of q.at n=59A138661
• Numbers of the form p^8*q*r where p, q, and r are distinct primes.at n=30A179747
• Terms of the cycles reached after iterations of numerator(sigma(n)/n) = A017665(n).at n=12A234534
• Integers that reach the (47360, 29127) cycle described in A234534, after iterations of numerator(sigma(n)/n) = A017665(n).at n=17A249614
• Numbers n such that denominator(sigma(sigma(n))/n) = denominator(sigma(sigma(s))/s) where s = sigma(n).at n=18A275321
• Number of maximum matchings in the n X n bishop graph.at n=4A286070
• Subsequence of terms of A019278 whose sum of divisors is also a term of A019278.at n=12A292949
• Main diagonal of the square array A058395.at n=13A362179