The factors of the number 321,121,020 are: 1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 41, 44, 55, 60, 66, 82, 110, 123, 132, 164, 165, 205, 220, 246, 330, 410, 451, 492, 615, 660, 820, 902, 1230, 1353, 1804, 2255, 2460, 2706, 4510, 5412, 6765, 9020, 11867, 13530, 23734, 27060, 35601, 47468, 59335, 71202, 118670, 130537, 142404, 178005, 237340, 261074, 356010, 391611, 486547, 522148, 652685, 712020, 783222, 973094, 1305370, 1459641, 1566444, 1946188, 1958055, 2432735, 2610740, 2919282, 3916110, 4865470, 5352017, 5838564, 7298205, 7832220, 9730940, 10704034, 14596410, 16056051, 21408068, 26760085, 29192820, 32112102, 53520170, 64224204, 80280255, 107040340, 160560510, 321121020.
If you add them up, you will get the total of 1,004,887,296.