#include <stdio.h>

int main() {
    long long i = 0, n = 0, m = 0, r = 0;
    scanf("%lld %lld", &n, &m);
    for (i = 1; i <= 1000000; i++) {
        long long i2 = i * i;
        if (i2 > m) break;
        long long nc = n > i2 ? ((n+i-1)/i) : i;
        long long mc = m/i;
        if (nc <= mc) r += 2 * (mc - nc + 1);
        if (i2 >= n && i2 <= m) r -= 1;
    }
    printf("%lld\n", r);
    return 0;
}