The factors of the number 786,600 are: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 23, 24, 25, 30, 36, 38, 40, 45, 46, 50, 57, 60, 69, 72, 75, 76, 90, 92, 95, 100, 114, 115, 120, 138, 150, 152, 171, 180, 184, 190, 200, 207, 225, 228, 230, 276, 285, 300, 342, 345, 360, 380, 414, 437, 450, 456, 460, 475, 552, 570, 575, 600, 684, 690, 760, 828, 855, 874, 900, 920, 950, 1035, 1140, 1150, 1311, 1368, 1380, 1425, 1656, 1710, 1725, 1748, 1800, 1900, 2070, 2185, 2280, 2300, 2622, 2760, 2850, 3420, 3450, 3496, 3800, 3933, 4140, 4275, 4370, 4600, 5175, 5244, 5700, 6555, 6840, 6900, 7866, 8280, 8550, 8740, 10350, 10488, 10925, 11400, 13110, 13800, 15732, 17100, 17480, 19665, 20700, 21850, 26220, 31464, 32775, 34200, 39330, 41400, 43700, 52440, 65550, 78660, 87400, 98325, 131100, 157320, 196650, 262200, 393300, 786600.
If you add them up, you will get the total of 2,901,600.