c++ – Splitting an integer to its digits

I want to split an integer of type unsigned long long to its digits.
Any comments and suggestions are always welcome.

vector<unsigned short> IntegerDigits(unsigned long long input)
{
    vector<unsigned short> output;
    const unsigned short n = log10(ULLONG_MAX);
    unsigned long long divisor = pow(10, n);
    bool leadingZero = true;

    for (int i = 0; i < n + 1; i++)
    {
        unsigned short digit = input / divisor % 10;
        if (!leadingZero || digit != 0)
        {
            output.push_back(digit);
            leadingZero = false;
        }
        divisor /= 10;
    }

    return output;
}

void main()
{
    vector<unsigned short> output = IntegerDigits(ULLONG_MAX);

    cout << ULLONG_MAX << ": (";
    for (auto y : output)
        cout << y << ", ";
    cout << "bb)";

    cout << ""<<endl;

}