82
82是81搭83之间个自然数。
- 第59个合数，正约数有1、2、41搭82。前一个为81、下一个为84。
- 第63个亏数，真约数和为44，亏度为38。前一个为81、下一个为83。
- 第27个半素数。前一个为77、下一个为85。
- 铅个原子序数。
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