The factors of the number 1,647,072 are: 1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 19, 21, 24, 28, 32, 36, 38, 42, 43, 48, 56, 57, 63, 72, 76, 84, 86, 96, 112, 114, 126, 129, 133, 144, 152, 168, 171, 172, 224, 228, 252, 258, 266, 288, 301, 304, 336, 342, 344, 387, 399, 456, 504, 516, 532, 602, 608, 672, 684, 688, 774, 798, 817, 903, 912, 1008, 1032, 1064, 1197, 1204, 1368, 1376, 1548, 1596, 1634, 1806, 1824, 2016, 2064, 2128, 2394, 2408, 2451, 2709, 2736, 3096, 3192, 3268, 3612, 4128, 4256, 4788, 4816, 4902, 5418, 5472, 5719, 6192, 6384, 6536, 7224, 7353, 9576, 9632, 9804, 10836, 11438, 12384, 12768, 13072, 14448, 14706, 17157, 19152, 19608, 21672, 22876, 26144, 28896, 29412, 34314, 38304, 39216, 43344, 45752, 51471, 58824, 68628, 78432, 86688, 91504, 102942, 117648, 137256, 183008, 205884, 235296, 274512, 411768, 549024, 823536, 1647072.
If you add them up, you will get the total of 5,765,760.