116522119

Appears in sequences

• Sum of divisors of n, sigma(n) (A000203), is a power of number of divisors of n, d(n) (A000005).at n=27A051281
• a(n) is the largest number k such that sigma(k) = 2^n or 0 if no such k exists.at n=27A295043
• Sphenic numbers that are the product of Mersenne primes.at n=17A346138
• 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=21A349838