The factors of the number 2,550,408 are: 1, 2, 3, 4, 6, 7, 8, 12, 14, 17, 19, 21, 24, 28, 34, 38, 42, 47, 51, 56, 57, 68, 76, 84, 94, 102, 114, 119, 133, 136, 141, 152, 168, 188, 204, 228, 238, 266, 282, 323, 329, 357, 376, 399, 408, 456, 476, 532, 564, 646, 658, 714, 798, 799, 893, 952, 969, 987, 1064, 1128, 1292, 1316, 1428, 1596, 1598, 1786, 1938, 1974, 2261, 2397, 2584, 2632, 2679, 2856, 3192, 3196, 3572, 3876, 3948, 4522, 4794, 5358, 5593, 6251, 6392, 6783, 7144, 7752, 7896, 9044, 9588, 10716, 11186, 12502, 13566, 15181, 16779, 18088, 18753, 19176, 21432, 22372, 25004, 27132, 30362, 33558, 37506, 44744, 45543, 50008, 54264, 60724, 67116, 75012, 91086, 106267, 121448, 134232, 150024, 182172, 212534, 318801, 364344, 425068, 637602, 850136, 1275204, 2550408.
If you add them up, you will get the total of 8,294,400.