200
200是199搭201之间个自然数。
- 合数，正约数有1、2、4、5、8、10、20、25、40、50、100搭200。
- 第46个过剩数，真约数和为265，盈度为65。前一个为198、下一个为204。
- 十进制个奢侈数。
- 汞个原子量为200。
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