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【Project Euler】Problem 16: 2のべき乗の数字和

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  • 本記事はProjectEulerの「100番以下の問題の説明は記載可能」という規定に基づいて回答のヒントが書かれていますので、自分である程度考えてみてから読まれることをお勧めします。

問題 16. 2のべき乗の数字和

原文 Problem 16: Power digit sum

問題の要約:2の1000乗の数字和を求めよ

この問題も桁数制限のないPythonでは簡単です。数字和は今後もよく使うのでdigitsumという関数にしておきます。

def digitsum(n):
  return sum(map(int,str(n)))

print(f"Answer : {digitsum(2**1000)}")

(開発環境:Google Colab)

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