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Question Number 118357 by conclaude last updated on 17/Oct/20

$$\mathrm{Find}\mathrm{the}\mathrm{sum}\mathrm{of}\mathrm{the}\mathrm{prime}\mathrm{factors}\mathrm{of}$$$${20}^5+21.$$

Answered by MJS_new last updated on 17/Oct/20

$${20}^5+21=3200021=11\times 421\times 691$$$$\Rightarrow$$$$\mathrm{answer}\mathrm{is}1123$$

Answered by 1549442205PVT last updated on 17/Oct/20

$${20}^5+21=3200021=11.421.691$$$$\mathrm{The}\mathrm{sum}\mathrm{of}\mathrm{prime}\mathrm{divisors}\mathrm{equal}\mathrm{to}$$$$11+421+691=1123$$

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