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[组合] N乘以2014的乘积有1000个约数

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realnumber posted 2014-2-20 17:34 |Read mode
Last edited by realnumber 2014-2-20 17:50陕西咸阳王晋远(16%%%%85)  17:27:34
N乘以2014的乘积有1000个约数,问整数N最小是多少?求解!
$2014=2\times19\times53$
猜测是$2^3\times3^4\times5^4\times7$
穷举应该可以证明,但很琐碎.懒得写了.

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kuing posted 2014-2-20 17:46
N和约数神马的可以是负的不?

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original poster realnumber posted 2014-2-20 17:51
可以负的,但没特别说明的话,一般是正整数.

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original poster realnumber posted 2014-2-20 17:52
潜规则?要不开个帖子收罗潜规则?

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original poster realnumber posted 2014-2-20 18:06

转一个

陕西咸阳王晋远(16^^^^^85)  18:03:48
2的8次方乘以3的4次方再乘以4的4次方=5308416

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睡神 posted 2014-2-28 10:04
回复 5# realnumber
楼上显然是错的,怎会有4^4出现?
最小:$N=2^3*3^4*5^4*7=2835000$
除了不懂,就是装懂

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kuing posted 2014-2-28 11:27
回复 6# 睡神

好久没见

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