The factors of the number 760,320 are: 1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 27, 30, 32, 33, 36, 40, 44, 45, 48, 54, 55, 60, 64, 66, 72, 80, 88, 90, 96, 99, 108, 110, 120, 128, 132, 135, 144, 160, 165, 176, 180, 192, 198, 216, 220, 240, 256, 264, 270, 288, 297, 320, 330, 352, 360, 384, 396, 432, 440, 480, 495, 512, 528, 540, 576, 594, 640, 660, 704, 720, 768, 792, 864, 880, 960, 990, 1056, 1080, 1152, 1188, 1280, 1320, 1408, 1440, 1485, 1536, 1584, 1728, 1760, 1920, 1980, 2112, 2160, 2304, 2376, 2560, 2640, 2816, 2880, 2970, 3168, 3456, 3520, 3840, 3960, 4224, 4320, 4608, 4752, 5280, 5632, 5760, 5940, 6336, 6912, 7040, 7680, 7920, 8448, 8640, 9504, 10560, 11520, 11880, 12672, 13824, 14080, 15840, 16896, 17280, 19008, 21120, 23040, 23760, 25344, 28160, 31680, 34560, 38016, 42240, 47520, 50688, 63360, 69120, 76032, 84480, 95040, 126720, 152064, 190080, 253440, 380160, 760320.
If you add them up, you will get the total of 2,946,240.