589786

Appears in sequences

• a(n) = T(n,0) + T(n,1) + ... + T(n,[ n/2 ]), T given by A027170.at n=17A027179
• The 28-cycle of the n => sigma(n)-n process, where sigma(n) is the sum of divisors of n (A000203).at n=8A072890
• Conjectured list of sociable numbers.at n=31A122726