Q: What is the sum of all factors of the number 1,221,402 including 1,221,402?

Why is 3,007,872 the sum of all factors of 1,221,402, including 1,221,402?

The factors of the number 1,221,402 are: 1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 78, 91, 182, 273, 546, 2237, 4474, 6711, 13422, 15659, 29081, 31318, 46977, 58162, 87243, 93954, 174486, 203567, 407134, 610701, 1221402.

If you add them up, you will get the total of 3,007,872.

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