507392

Appears in sequences

• Admirable numbers such that the subtracted divisor is square.at n=27A109806
• Abundant numbers n such that n/(sigma(n)-2n) is an integer.at n=40A153501
• Numbers with abundance 32.at n=9A175989
• Abundant numbers n for which the abundance d = sigma(n) - 2*n is a proper divisor, that is, 0 < d < n and d | n.at n=38A181595
• Numbers m with divisor 32 | m and abundance sigma(m)-2*m = 32.at n=3A181601
• Near-perfect numbers (A181595) of the form 2^(t-1)*(2^t-2^k-1), where 2^t-2^k-1 is prime, k>=1, t>k.at n=20A181701
• Numbers of the form m=2^(t-1)*(2^t-33), where 2^t-33 is prime.at n=3A181707