名校
1 . 设集合
,其中
是正整数,记
.对于
,
,若存在整数k,满足
,则称
整除
,设
是满足
整除
的数对
的个数.
(I)若
,
,写出
,
的值;
(Ⅱ)求
的最大值;
(Ⅲ)设A中最小的元素为a,求使得
取到最大值时的所有集合A.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a784e0ba1c17aba6990123fe39b89114.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dec99c57bf7997bd93e1ed8f48d5af9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2696df108ff4ad5a2d46a1b656f859e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50a272adba0f1120109824440f0e252c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5f98b06f1247856f443a4cb571104e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/097d09a11d999ee464ee6e67ee55783e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/059a6c5a965c335b8da05e697da2c7c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2319b6a5373bc8eb13772b8e6d047779.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dca83d5e388afb005ccf2548661775c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/059a6c5a965c335b8da05e697da2c7c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2319b6a5373bc8eb13772b8e6d047779.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/612f4d31671d4eb163a5a1ed0570af9b.png)
(I)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8348dd5d3b8c0ed6a0738d31a0cf3b05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e1bc81e3941341782c1e4babf150ce8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dca83d5e388afb005ccf2548661775c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dbf211a16295eed3dd56fc97d8cc618.png)
(Ⅱ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dca83d5e388afb005ccf2548661775c0.png)
(Ⅲ)设A中最小的元素为a,求使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dca83d5e388afb005ccf2548661775c0.png)
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2020-11-06更新
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661次组卷
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4卷引用:北京市朝阳区2020届高三年级下学期二模数学试题