From the 100 numbers of 1, 2, 3..., 99, 100, it is required to cross out as few numbers as possible so that each of the remaining numbers is not equal to the product of the other two numbers. How many numbers should be crossed out at least? ．
从1、2、3…、99、100这100个数中，要求划去尽量少的数，使得余下的数中每一个数都不等于另外两个数的乘积，最少要划去多少个数．
<result>8</result>