The factors of the number 13,388,544 are: 1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 27, 32, 36, 39, 48, 52, 54, 64, 72, 78, 96, 104, 108, 117, 128, 144, 149, 156, 192, 208, 216, 234, 256, 288, 298, 312, 351, 384, 416, 432, 447, 468, 576, 596, 624, 702, 768, 832, 864, 894, 936, 1152, 1192, 1248, 1341, 1404, 1664, 1728, 1788, 1872, 1937, 2304, 2384, 2496, 2682, 2808, 3328, 3456, 3576, 3744, 3874, 4023, 4768, 4992, 5364, 5616, 5811, 6912, 7152, 7488, 7748, 8046, 9536, 9984, 10728, 11232, 11622, 14304, 14976, 15496, 16092, 17433, 19072, 21456, 22464, 23244, 28608, 29952, 30992, 32184, 34866, 38144, 42912, 44928, 46488, 52299, 57216, 61984, 64368, 69732, 85824, 89856, 92976, 104598, 114432, 123968, 128736, 139464, 171648, 185952, 209196, 247936, 257472, 278928, 343296, 371904, 418392, 495872, 514944, 557856, 743808, 836784, 1029888, 1115712, 1487616, 1673568, 2231424, 3347136, 4462848, 6694272, 13388544.
If you add them up, you will get the total of 42,924,000.