{"height":"190","type":"rich","blog_url":"https://inamori.hateblo.jp/","description":"\u3053\u3053\u3067\u306f\u3001d(n)\u3092n\u81ea\u8eab\u3092\u9664\u3044\u305fn\u306e\u7d04\u6570\u306e\u7dcf\u548c\u3068\u3057\u307e\u3059\u3002 \u5b8c\u5168\u6570 d(n) = n \u3092\u6e80\u305f\u3059\u3068\u304d\u3001n\u3092\u5b8c\u5168\u6570\uff08Perfect number\uff09\u3068\u547c\u3073\u307e\u3059\u3002 p = 2m - 1 \u3067\u3001p\u304c\u7d20\u6570\u306e\u3068\u304d\u3001p\u3092\u30e1\u30eb\u30bb\u30f3\u30cc\u7d20\u6570\u3068\u547c\u3073\u307e\u3059\u3002\u30e1\u30eb\u30bb\u30f3\u30cc\u7d20\u6570\u306b\u306f\u7279\u5225\u306a\u9ad8\u901f\u306e\u7d20\u6570\u5224\u5b9a\u6cd5\u304c\u3042\u308a\u3001\u73fe\u5728\u898b\u3064\u304b\u3063\u3066\u3044\u308b\u5927\u304d\u306a\u7d20\u6570\u306f\u3059\u3079\u3066\u30e1\u30eb\u30bb\u30f3\u30cc\u7d20\u6570\u3067\u3059\u3002 \u3055\u3066\u3001p = 2m - 1\u304c\u30e1\u30eb\u30bb\u30f3\u30cc\u7d20\u6570\u306e\u3068\u304d\u3001 n = 2m-1(2m - 1) \u3068\u3059\u308b\u3068\u3001n\u306f\u5b8c\u5168\u6570\u3067\u3059\u3002\u306a\u305c\u306a\u3089\u3001\u7d04\u6570\u306e\u3068\u3053\u308d\u3067\u7d39\u4ecb\u3057\u305f\u8a08\u7b97\u6cd5\u3088\u308a\u3001 d(n) = (2m - 1)(1 + 2m - 1) - n = n \u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002 \u9006\u306b\u3001\u5076\u6570\u306e\u5b8c\u5168\u6570\u2026","width":"100%","provider_name":"Hatena Blog","published":"2009-11-13 00:00:00","url":"https://inamori.hateblo.jp/entry/20091113/p1","categories":["PE","\u6570\u5b66","\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0"],"author_url":"https://blog.hatena.ne.jp/inamori/","blog_title":"inamori\u2019s diary","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Finamori.hateblo.jp%2Fentry%2F20091113%2Fp1\" title=\"\u5b8c\u5168\u6570\u30fb\u53cb\u611b\u6570\u30fb\u793e\u4ea4\u6570 - inamori\u2019s diary\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","title":"\u5b8c\u5168\u6570\u30fb\u53cb\u611b\u6570\u30fb\u793e\u4ea4\u6570","author_name":"inamori","version":"1.0","image_url":null,"provider_url":"https://hatena.blog"}