
    Design a security verification system that calculates all possible threshold amounts for a given transaction value, where each threshold represents a distinct security check level that divides evenly into the total amount. The system should return the sum of all these security threshold values to determine the cumulative risk score for the transaction.
    

    
def sum_div(number):
    """
    Design a security verification system that calculates all possible threshold amounts for a given transaction value, where each threshold represents a distinct security check level that divides evenly into the total amount. The system should return the sum of all these security threshold values to determine the cumulative risk score for the transaction.
    

    """
def sum_div(number):
    """
    Design a security verification system that calculates all possible threshold amounts for a given transaction value, where each threshold represents a distinct security check level that divides evenly into the total amount. The system should return the sum of all these security threshold values to determine the cumulative risk score for the transaction.
    

    """
    divisors = [1]
    for i in range(2, number):
        if number % i == 0:
            divisors.append(i)
    return sum(divisors)