The factors of the number 6,615,312 are: 1, 2, 3, 4, 6, 8, 11, 12, 16, 17, 22, 24, 33, 34, 44, 48, 51, 66, 67, 68, 88, 102, 121, 132, 134, 136, 176, 187, 201, 204, 242, 264, 268, 272, 363, 374, 402, 408, 484, 528, 536, 561, 726, 737, 748, 804, 816, 968, 1072, 1122, 1139, 1452, 1474, 1496, 1608, 1936, 2057, 2211, 2244, 2278, 2904, 2948, 2992, 3216, 3417, 4114, 4422, 4488, 4556, 5808, 5896, 6171, 6834, 8107, 8228, 8844, 8976, 9112, 11792, 12342, 12529, 13668, 16214, 16456, 17688, 18224, 24321, 24684, 25058, 27336, 32428, 32912, 35376, 37587, 48642, 49368, 50116, 54672, 64856, 75174, 97284, 98736, 100232, 129712, 137819, 150348, 194568, 200464, 275638, 300696, 389136, 413457, 551276, 601392, 826914, 1102552, 1653828, 2205104, 3307656, 6615312.
If you add them up, you will get the total of 20,186,208.