题解 | 完全数计算
完全数计算
https://www.nowcoder.com/practice/7299c12e6abb437c87ad3e712383ff84
#include <stdio.h> int main() { int n,num,i,j,sum; while (scanf("%d", &n) != EOF) { num = 0; for(i = 1;i <= n;i++) { sum = 0; for(j = 1;j < i;j++) { if(i % j == 0) sum += j; } if(sum == i) num += 1; } printf("%d\n", num); } return 0; }