531968

Appears in sequences

• Numbers m such that 2*m - sigma(m) is a divisor of m and greater than one, where sigma = A000203 is the sum of divisors.at n=26A060326
• Numbers k whose abundance sigma(k) - 2*k = -16. Numbers k whose deficiency is 16.at n=14A125248
• Numbers n such that sigma(n) = (sigma(n)-n)', where sigma(n) is the sum of the divisors of n and (sigma(n)-n)' is the arithmetic derivative of the sum of aliquot parts of n.at n=6A260964
• Deficient-perfect numbers: Deficient numbers n such that n/(2n-sigma(n)) is an integer.at n=46A271816
• Numbers k such that sigma(k) == 0 (mod k-8).at n=24A274562