The factors of the number 4,256,000 are: 1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 25, 28, 32, 35, 38, 40, 50, 56, 64, 70, 76, 80, 95, 100, 112, 125, 128, 133, 140, 152, 160, 175, 190, 200, 224, 250, 256, 266, 280, 304, 320, 350, 380, 400, 448, 475, 500, 532, 560, 608, 640, 665, 700, 760, 800, 875, 896, 950, 1000, 1064, 1120, 1216, 1280, 1330, 1400, 1520, 1600, 1750, 1792, 1900, 2000, 2128, 2240, 2375, 2432, 2660, 2800, 3040, 3200, 3325, 3500, 3800, 4000, 4256, 4480, 4750, 4864, 5320, 5600, 6080, 6400, 6650, 7000, 7600, 8000, 8512, 8960, 9500, 10640, 11200, 12160, 13300, 14000, 15200, 16000, 16625, 17024, 19000, 21280, 22400, 24320, 26600, 28000, 30400, 32000, 33250, 34048, 38000, 42560, 44800, 53200, 56000, 60800, 66500, 76000, 85120, 106400, 112000, 121600, 133000, 152000, 170240, 212800, 224000, 266000, 304000, 425600, 532000, 608000, 851200, 1064000, 2128000, 4256000.
If you add them up, you will get the total of 12,754,560.