1090912

Appears in sequences

• Numbers m such that 2*m - sigma(m) is a divisor of m and greater than one, where sigma = A000203 is the sum of divisors.at n=35A060326
• Numbers k with abundance radius of 8, i.e., abs(sigma(k)-2*k) = 8.at n=23A088820
• Near-multiperfects with primes, powers of 2, 6 * prime and 2^n * prime excluded, abs(sigma(n) mod n) <= log(n).at n=31A117350
• Numbers k whose abundance sigma(k) - 2*k = -8. Numbers k whose deficiency is 8.at n=12A125247
• Deficient numbers with increasing abundancy without being powers of 2.at n=15A228450
• Numbers k such that sigma(k) == 0 (mod k-4).at n=18A274554
• Numbers n for which A294898(n) is not zero and A294898(n) divides A000120(n); numbers for which A326130(n) = abs(A294898(n)).at n=31A326132