- #1

- 23

- 0

h

_{n}:= n-th harmonic number := 1/1 + 1/2 + · · · + 1/n, and

σ

_{n}:= divisor function of n := sum of positive divisors of n, then if n > 1,

h

_{n}+ e

^{hn}ln h

_{n}> σ

_{n}.

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