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相亲数链

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若干个正整数,其中第一个数的除了本身之外全部因数的和,等于第二个数;第二个数的除本身之外全部因数的和,等于第三个数;最后一个数的除本身之外全部因数的和,等于第一个数。这些自然数形成一个有趣的链环状,称之为相亲数链,又称之为亲和数链交际数、社交数(Sociable number)。相亲数可视为二环亲和数链,完美数是一环亲和数链。

例如:12496、14288、15472、14536、14264组成五环相亲数链

参见

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相亲数链
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