{"author_url":"https://blog.hatena.ne.jp/jeneshicc/","author_name":"jeneshicc","width":"100%","categories":["Project Euler"],"height":"190","image_url":null,"provider_name":"Hatena Blog","title":"Problem 23","provider_url":"https://hatena.blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fjeneshicc.hatenadiary.org%2Fentry%2F20081028%2F1225203602\" title=\"Problem 23 - \u843d\u66f8\u304d\u3001\u6642\u3005\u843d\u5b66\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2008-10-28 23:20:02","version":"1.0","blog_url":"https://jeneshicc.hatenadiary.org/","type":"rich","url":"https://jeneshicc.hatenadiary.org/entry/20081028/1225203602","blog_title":"\u843d\u66f8\u304d\u3001\u6642\u3005\u843d\u5b66","description":"A perfect number is a number for which the sum of its proper divisors is exactly equal to the number. For example, the sum of the proper divisors of 28 would be 1 + 2 + 4 + 7 + 14 = 28, which means that 28 is a perfect number.A number whose proper divisors are less than the number is called deficien\u2026"}