The factors of the number 512,400 are: 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 25, 28, 30, 35, 40, 42, 48, 50, 56, 60, 61, 70, 75, 80, 84, 100, 105, 112, 120, 122, 140, 150, 168, 175, 183, 200, 210, 240, 244, 280, 300, 305, 336, 350, 366, 400, 420, 427, 488, 525, 560, 600, 610, 700, 732, 840, 854, 915, 976, 1050, 1200, 1220, 1281, 1400, 1464, 1525, 1680, 1708, 1830, 2100, 2135, 2440, 2562, 2800, 2928, 3050, 3416, 3660, 4200, 4270, 4575, 4880, 5124, 6100, 6405, 6832, 7320, 8400, 8540, 9150, 10248, 10675, 12200, 12810, 14640, 17080, 18300, 20496, 21350, 24400, 25620, 32025, 34160, 36600, 42700, 51240, 64050, 73200, 85400, 102480, 128100, 170800, 256200, 512400.
If you add them up, you will get the total of 512,401. Now subtract 512,400 to get 1,394,224