The factors of the number 767,520 are: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 32, 36, 39, 40, 41, 45, 48, 52, 60, 65, 72, 78, 80, 82, 90, 96, 104, 117, 120, 123, 130, 144, 156, 160, 164, 180, 195, 205, 208, 234, 240, 246, 260, 288, 312, 328, 360, 369, 390, 410, 416, 468, 480, 492, 520, 533, 585, 615, 624, 656, 720, 738, 780, 820, 936, 984, 1040, 1066, 1170, 1230, 1248, 1312, 1440, 1476, 1560, 1599, 1640, 1845, 1872, 1968, 2080, 2132, 2340, 2460, 2665, 2952, 3120, 3198, 3280, 3690, 3744, 3936, 4264, 4680, 4797, 4920, 5330, 5904, 6240, 6396, 6560, 7380, 7995, 8528, 9360, 9594, 9840, 10660, 11808, 12792, 14760, 15990, 17056, 18720, 19188, 19680, 21320, 23985, 25584, 29520, 31980, 38376, 42640, 47970, 51168, 59040, 63960, 76752, 85280, 95940, 127920, 153504, 191880, 255840, 383760, 767520.
If you add them up, you will get the total of 767,522. Now subtract 767,520 to get 2,121,912