The factors of the number 1,540,000 are: 1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 25, 28, 32, 35, 40, 44, 50, 55, 56, 70, 77, 80, 88, 100, 110, 112, 125, 140, 154, 160, 175, 176, 200, 220, 224, 250, 275, 280, 308, 350, 352, 385, 400, 440, 500, 550, 560, 616, 625, 700, 770, 800, 875, 880, 1000, 1100, 1120, 1232, 1250, 1375, 1400, 1540, 1750, 1760, 1925, 2000, 2200, 2464, 2500, 2750, 2800, 3080, 3500, 3850, 4000, 4375, 4400, 5000, 5500, 5600, 6160, 6875, 7000, 7700, 8750, 8800, 9625, 10000, 11000, 12320, 13750, 14000, 15400, 17500, 19250, 20000, 22000, 27500, 28000, 30800, 35000, 38500, 44000, 48125, 55000, 61600, 70000, 77000, 96250, 110000, 140000, 154000, 192500, 220000, 308000, 385000, 770000, 1540000.
If you add them up, you will get the total of 4,723,488.