492101632

Appears in sequences

• Let d_1=1 < d_2 < d_3 < ... be the divisors of n; sequence lists positive numbers n such that for some k, n = 2(d_1 + ... + d_k).at n=19A185961
• Numbers k for which sigma(k)/k - 1/4 is an integer.at n=7A218404
• Numbers k such that k divides sigma(3*k).at n=36A227303
• 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=15A229088