olymmath

BALTIC-WAY 2024 Problem 19

    Does there exist a positive integer NN which is divisible by at least 2024 distinct primes and whose positive divisors 1=d1<d2<…<dk=N1=d_{1}<d_{2}<\ldots<d_{k}=N are such that the number

    d2d1+d3d2+…+dkdk−1\frac{d_{2}}{d_{1}}+\frac{d_{3}}{d_{2}}+\ldots+\frac{d_{k}}{d_{k-1}}

    is an integer?

    Dataset text NuminaMath olympiads. Quoted with source.

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