ナルシシスト数
1. Narcissistic numberIn recreational number theory, a narcissistic number (also known as a pluperfect digital invariant, an Armstrong number or a plus perfect number) is a number that is the sum of its own digits each raised to the power of the number of digits. This definition depends on the base b of the number system used, e.g. b = 10 for the decimal system or b = 2 for the binary system. The definition of a narcissistic number relies on the decimal representation n = dkdk-1...d1d0 of a natural number n, e.g.
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Read “Narcissistic number” on English Wikipedia
Read “ナルシシスト数” on Japanese Wikipedia
Read “Narcissistic number” on DBpedia
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