124605

Appears in sequences

• Odd integers m such that phi(m) | sigma(m).at n=30A015715
• Numbers n such that the arithmetic, geometric and harmonic means of phi(n) and sigma(n) are all integers.at n=33A065146
• Numbers k such that sigma(k) = 4*phi(k).at n=24A068390
• Numbers k such that sigma(k) = phi(k)*omega(k).at n=16A073567
• Numbers k such that k, 2*k and 4*k are balanced numbers (A020492).at n=22A076376
• Numbers k such that k, 2*k, 4*k and 8*k are balanced numbers (A020492).at n=8A076377
• a(n) = 16*n^4 + 256*n^3 + 1160*n^2 + 1088*n + 285.at n=6A176712