编程求1000内的“完数”，“完数”是指一个数恰好等于它本身的因子之和。例如28=14+7+4+2+1-Programming requirements within the 1000 finished number , End number refers to a number of factors exactly equal to the sum of its own. For example, 28 = 14+ 7+ 4+ 2+ 1

二维数字信号的插值因子模板，非常易于理解，适合初学者-Two dimensional digital signal interpolation factor template, very easy to understand, suitable for beginners