57575890944
domain: N
Appears in sequences
- Numbers k such that sigma(k) = 7k/2.at n=6A055153
- Numbers m with half-integral abundancy index, sigma(m)/m = k+1/2 with integer k.at n=13A159907
- Numbers n such that antisigma(n) mod n = 0, where antisigma(n) = A024816(n) = sum of numbers less than n which do not divide n.at n=14A242484
- Numbers m such that g(m) = (m * tau(m) / sigma(m)), h(m) = (m * sigma(m)) / tau(m) and k(m) = (tau(m) * sigma(m)) / m are all integers.at n=17A333639
- Harmonic numbers with a record number of harmonic numbers that can be generated from them using an iterative process of multiplying by primes (see Comments).at n=13A335371