The factors of the number 3,172,608 are: 1, 2, 3, 4, 6, 8, 9, 12, 16, 17, 18, 24, 27, 32, 34, 36, 48, 51, 54, 64, 68, 72, 81, 96, 102, 108, 128, 136, 144, 153, 162, 192, 204, 216, 243, 256, 272, 288, 306, 324, 384, 408, 432, 459, 486, 544, 576, 612, 648, 729, 768, 816, 864, 918, 972, 1088, 1152, 1224, 1296, 1377, 1458, 1632, 1728, 1836, 1944, 2176, 2304, 2448, 2592, 2754, 2916, 3264, 3456, 3672, 3888, 4131, 4352, 4896, 5184, 5508, 5832, 6528, 6912, 7344, 7776, 8262, 9792, 10368, 11016, 11664, 12393, 13056, 14688, 15552, 16524, 19584, 20736, 22032, 23328, 24786, 29376, 31104, 33048, 39168, 44064, 46656, 49572, 58752, 62208, 66096, 88128, 93312, 99144, 117504, 132192, 176256, 186624, 198288, 264384, 352512, 396576, 528768, 793152, 1057536, 1586304, 3172608.
If you add them up, you will get the total of 3,172,614. Now subtract 3,172,608 to get 6,880,806