The factors of the number 6,472,704 are: 1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 43, 48, 49, 56, 64, 84, 86, 96, 98, 112, 128, 129, 147, 168, 172, 192, 196, 224, 256, 258, 294, 301, 336, 344, 384, 392, 448, 512, 516, 588, 602, 672, 688, 768, 784, 896, 903, 1024, 1032, 1176, 1204, 1344, 1376, 1536, 1568, 1792, 1806, 2064, 2107, 2352, 2408, 2688, 2752, 3072, 3136, 3584, 3612, 4128, 4214, 4704, 4816, 5376, 5504, 6272, 6321, 7168, 7224, 8256, 8428, 9408, 9632, 10752, 11008, 12544, 12642, 14448, 16512, 16856, 18816, 19264, 21504, 22016, 25088, 25284, 28896, 33024, 33712, 37632, 38528, 44032, 50176, 50568, 57792, 66048, 67424, 75264, 77056, 101136, 115584, 132096, 134848, 150528, 154112, 202272, 231168, 269696, 308224, 404544, 462336, 539392, 809088, 924672, 1078784, 1618176, 2157568, 3236352, 6472704.
If you add them up, you will get the total of 20,535,504.