The factors of the number 404,504,256 are: 1, 2, 3, 4, 6, 8, 12, 13, 16, 17, 24, 26, 32, 34, 39, 48, 51, 52, 64, 68, 78, 96, 102, 104, 136, 156, 192, 204, 208, 221, 272, 312, 408, 416, 442, 544, 624, 663, 816, 832, 884, 1088, 1248, 1326, 1632, 1768, 2496, 2652, 3264, 3536, 5304, 7072, 9533, 10608, 14144, 19066, 21216, 28599, 38132, 42432, 57198, 76264, 114396, 123929, 152528, 162061, 228792, 247858, 305056, 324122, 371787, 457584, 486183, 495716, 610112, 648244, 743574, 915168, 972366, 991432, 1296488, 1487148, 1830336, 1944732, 1982864, 2106793, 2592976, 2974296, 3889464, 3965728, 4213586, 5185952, 5948592, 6320379, 7778928, 7931456, 8427172, 10371904, 11897184, 12640758, 15557856, 16854344, 23794368, 25281516, 31115712, 33708688, 50563032, 67417376, 101126064, 134834752, 202252128, 404504256.
If you add them up, you will get the total of 404,505,072. Now subtract 404,504,256 to get 816,000,288