Divisor Sum of 124,015,008

Example of Sigma Function of Integer

 * $\map \sigma {124 \, 015 \, 008} = 350 \, 584 \, 416$

where $\sigma$ denotes the $\sigma$ function.

Proof
From Sigma Function of Integer
 * $\displaystyle \map \sigma n = \prod_{1 \mathop \le i \mathop \le r} \frac {p_i^{k_i + 1} - 1} {p_i - 1}$

where $n = \displaystyle \prod_{1 \mathop \le i \mathop \le r} p_i^{k_i}$ denotes the prime decomposition of $n$.

We have that:
 * $124 \, 015 \, 008 = 2^5 \times 3 \times 13 \times 99 \, 371$

Hence: