The factors of the number 5,160,960 are: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 128, 140, 144, 160, 168, 180, 192, 210, 224, 240, 252, 256, 280, 288, 315, 320, 336, 360, 384, 420, 448, 480, 504, 512, 560, 576, 630, 640, 672, 720, 768, 840, 896, 960, 1008, 1024, 1120, 1152, 1260, 1280, 1344, 1440, 1536, 1680, 1792, 1920, 2016, 2048, 2240, 2304, 2520, 2560, 2688, 2880, 3072, 3360, 3584, 3840, 4032, 4096, 4480, 4608, 5040, 5120, 5376, 5760, 6144, 6720, 7168, 7680, 8064, 8192, 8960, 9216, 10080, 10240, 10752, 11520, 12288, 13440, 14336, 15360, 16128, 16384, 17920, 18432, 20160, 20480, 21504, 23040, 24576, 26880, 28672, 30720, 32256, 35840, 36864, 40320, 40960, 43008, 46080, 49152, 53760, 57344, 61440, 64512, 71680, 73728, 80640, 81920, 86016, 92160, 107520, 114688, 122880, 129024, 143360, 147456, 161280, 172032, 184320, 215040, 245760, 258048, 286720, 322560, 344064, 368640, 430080, 516096, 573440, 645120, 737280, 860160, 1032192, 1290240, 1720320, 2580480, 5160960.
If you add them up, you will get the total of 20,446,608.