2701389600

Appears in sequences

• Numbers k whose average divisor is nonintegral and divides k.at n=13A046999
• a(1) = 2; a(n) for n > 1 is the smallest k > a(n-1) such that the harmonic mean of the divisors of k is one of the previous terms a(1), ..., a(n-1).at n=3A164829
• Numbers k for which sigma(k)/k - 4/5 is an integer.at n=9A218427
• Harmonic numbers k such that the harmonic mean of the divisors of k is also a harmonic number.at n=3A317476
• Harmonic numbers (A001599) with a record number of divisors.at n=22A335317
• Harmonic numbers (A001599) with a record number of divisors that are harmonic numbers.at n=12A335388