{"width":"100%","description":"\u554f\u984c Problem 23\uff1aNon-abundant sums 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 n is called deficient if the sum \u2026","height":"190","version":"1.0","title":"Project Euler 23","url":"https://blog.muchance.jp/entry/2017/06/06/233000","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fblog.muchance.jp%2Fentry%2F2017%2F06%2F06%2F233000\" title=\"Project Euler 23 - mu chance or much chance ?\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_url":"https://hatena.blog","type":"rich","author_url":"https://blog.hatena.ne.jp/muchance/","published":"2017-06-06 23:30:00","provider_name":"Hatena Blog","blog_url":"https://blog.muchance.jp/","categories":["Project Euler"],"blog_title":"mu chance or much chance ?","image_url":null,"author_name":"muchance"}