11010027

Appears in sequences

• Numbers that are a product of distinct Mersenne primes (elements of A000668).at n=35A046528
• Sum of divisors of n, sigma(n) (A000203), is a power of number of divisors of n, d(n) (A000005).at n=21A051281
• Least k such that sigma(k)=m^n for some m>1.at n=23A063869
• Positions of records in A175432.at n=20A169981
• a(n) is the smallest number N such that sigma(N) is an n-th power but not a higher power, with a(n) = 0 if no such number exists.at n=24A180162
• Numbers n with the property that there are integers k, h such that sigma(n) = k^tau(n) = tau(n)^h.at n=7A225362
• a(n) is the smallest number k such that sigma(k) = 2^n or 0 if no such k exists.at n=24A247956
• a(n) is the least composite x such that sigma(x) divides (x-1)^n but not (x-1)^(n-1), for n >= 2.at n=22A254352
• Nonprime numbers k such that sum of the divisors of k is a power of 2.at n=28A254603
• a(n) = f(1,n,n), where f is the Sudan function defined in A260002.at n=19A260006
• Sphenic numbers that are the product of Mersenne primes.at n=10A346138
• Irregular table read by rows; the n-th row contains in ascending order the integers m > 1 such that sigma(m) = tau(m)^n; the first row contains 1.at n=15A349838