
    Given a transit vehicle's total operational hours, calculate the sum of all possible maintenance interval lengths that evenly divide into the total runtime to help establish a comprehensive maintenance schedule. For example, if a bus has operated for 100 hours, find the sum of all possible inspection intervals (such as 1, 2, 4, 5, 10, 20, 25, 50, and 100 hours) to optimize the maintenance planning system.
    

    
def sum_div(number):
    """
    Given a transit vehicle's total operational hours, calculate the sum of all possible maintenance interval lengths that evenly divide into the total runtime to help establish a comprehensive maintenance schedule. For example, if a bus has operated for 100 hours, find the sum of all possible inspection intervals (such as 1, 2, 4, 5, 10, 20, 25, 50, and 100 hours) to optimize the maintenance planning system.
    

    """
def sum_div(number):
    """
    Given a transit vehicle's total operational hours, calculate the sum of all possible maintenance interval lengths that evenly divide into the total runtime to help establish a comprehensive maintenance schedule. For example, if a bus has operated for 100 hours, find the sum of all possible inspection intervals (such as 1, 2, 4, 5, 10, 20, 25, 50, and 100 hours) to optimize the maintenance planning system.
    

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