The factors of the number 5,231,520 are: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 32, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 84, 90, 96, 105, 108, 112, 120, 126, 135, 140, 144, 160, 168, 173, 180, 189, 210, 216, 224, 240, 252, 270, 280, 288, 315, 336, 346, 360, 378, 420, 432, 480, 504, 519, 540, 560, 630, 672, 692, 720, 756, 840, 864, 865, 945, 1008, 1038, 1080, 1120, 1211, 1260, 1384, 1440, 1512, 1557, 1680, 1730, 1890, 2016, 2076, 2160, 2422, 2520, 2595, 2768, 3024, 3114, 3360, 3460, 3633, 3780, 4152, 4320, 4671, 4844, 5040, 5190, 5536, 6048, 6055, 6228, 6920, 7266, 7560, 7785, 8304, 9342, 9688, 10080, 10380, 10899, 12110, 12456, 13840, 14532, 15120, 15570, 16608, 18165, 18684, 19376, 20760, 21798, 23355, 24220, 24912, 27680, 29064, 30240, 31140, 32697, 36330, 37368, 38752, 41520, 43596, 46710, 48440, 49824, 54495, 58128, 62280, 65394, 72660, 74736, 83040, 87192, 93420, 96880, 108990, 116256, 124560, 130788, 145320, 149472, 163485, 174384, 186840, 193760, 217980, 249120, 261576, 290640, 326970, 348768, 373680, 435960, 523152, 581280, 653940, 747360, 871920, 1046304, 1307880, 1743840, 2615760, 5231520.
If you add them up, you will get the total of 5,231,535. Now subtract 5,231,520 to get 15,815,520