Q: What is the sum of all factors of the number 402,660 including 402,660?

Why is 1,221,948 the sum of all factors of 402,660, including 402,660?

The factors of the number 402,660 are: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 2237, 4474, 6711, 8948, 11185, 13422, 20133, 22370, 26844, 33555, 40266, 44740, 67110, 80532, 100665, 134220, 201330, 402660.

If you add them up, you will get the total of 1,221,948.

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