4428914688

Appears in sequences

• Numbers m such that the sum of the first k divisors of m is equal to m for some k.at n=19A064510
• Numbers k such that there is a proper divisor d of k satisfying sigma(d)=k.at n=16A081756
• Erdős-Nicolas numbers.at n=13A194472
• Numbers k for which sigma(k)/k - 1/4 is an integer.at n=8A218404
• Numbers k such that sigma(k) mod k = antisigma(k) mod k, where sigma(k) = A000203(k) = sum of divisors of k, antisigma(k) = A024816(k) = sum of non-divisors of k.at n=20A229088
• Sum of divisors of the multiply-perfect numbers.at n=17A307741