sigma(n)/nloglog n, Gronwall, 1912
Posted: Fri Oct 19, 2007 11:33 am
Sa se arate ca \( \limsup_{n\to\infty}\frac{\sigma(n)}{n\log\log n}=e^{\gamma} \), unde \( \sigma(n)=\sum_{d/n}d \) este functia "sum-divisor".
Gronwall, 1912.
Gronwall, 1912.