Q: What is the sum of all factors of the number 120,840 excluding 120,840?

A: 267,960

Why is 267,960 the sum of all factors of 120,840, excluding 120,840?

The factors of the number 120,840 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 53, 57, 60, 76, 95, 106, 114, 120, 152, 159, 190, 212, 228, 265, 285, 318, 380, 424, 456, 530, 570, 636, 760, 795, 1007, 1060, 1140, 1272, 1590, 2014, 2120, 2280, 3021, 3180, 4028, 5035, 6042, 6360, 8056, 10070, 12084, 15105, 20140, 24168, 30210, 40280, 60420, 120840.

If you add them up, you will get the total of 121,107. Now subtract 120,840 to get 267,960