My code functions with a printf statement, but not without it

Adding the printf("Hi!\n") statements allows the code to work. It also works if the bound initial bound is improper and the user enters a new one. When I ran some tests calculate divers sometimes returned a character instead of an integer. I'm thinking it has something to do with my memory allocation. I also noticed that ./a.out 6 10 "|" would work but ./a.out 6 25 "|" would not causing an infinite loop when printing the lines of "|".

#include <stdio.h>
#include <string.h>
#include <stdlib.h>

// Structs
typedef struct data_struct {
    int lineNumber;
    int divisorSum;
    char type[10];
}data;

// Prototypes
int calculateDivsors(int integer);

// Functions
int main (int argc, char *argv[]) {

    int lowerBound;
    int upperBound;
    char character;

    // Gets the values from command-line
    sscanf(argv[1], "%d", &lowerBound);
    sscanf(argv[2], "%d", &upperBound);
    sscanf(argv[3], "%c", &character);

    // Check to see if bound is proper
    while (upperBound <= lowerBound || lowerBound < 2) {
        printf("Error, please enter a new range (positive increasing).\n");
        scanf("%d %d", &lowerBound, &upperBound);
    }

    // Structure calls
    data* info = NULL;
    int totalData = upperBound - lowerBound;

    // Allocate the memory
    info = (data*)malloc(totalData * sizeof(data));

    printf("Hi!\n");

    if (info != NULL) {
        // Iterate through all the digits between the two bounds
        for (int i = lowerBound; i <= upperBound; i++) {
            int sum = calculateDivsors(i);


            // Write data to indiviual structures
            info[i].lineNumber = i;
            info[i].divisorSum = sum;

            // Check to see if the sum is greater than, less than, or equal to the original
            if (sum == i) {
                strcpy(info[i].type, "Perfect");
            }

            else if (sum > i) {
                strcpy(info[i].type, "Abundant");
            }

            else if (sum < i) {
                strcpy(info[i].type, "Deficient");
            }

            // Line n# has a column width of 4, string of 10
            printf("%4d is %-10s\t", info[i].lineNumber, info[i].type);

            // Generate Pictogram
            for (int j = 0; j < info[i].divisorSum; j++) {
                printf("%c", character);
            }
            printf("\n");
        }

    }
}

// Adds up the sum of diviors
int calculateDivsors(int integer) {

    int sum = 0; 

    for (int i = 1; i < integer; i++) {
        // Add to sum if perfectly i is a sum of integer
         if (integer % i == 0) {
            sum += i;
        }
    }

 return sum; // Returns the sum of diviors
}