The factors of the number 6,680,016 are: 1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 36, 42, 47, 48, 54, 56, 63, 72, 84, 94, 108, 112, 126, 141, 144, 168, 188, 189, 216, 252, 282, 329, 336, 376, 378, 423, 432, 504, 564, 658, 752, 756, 846, 987, 1008, 1128, 1269, 1316, 1512, 1692, 1974, 2209, 2256, 2538, 2632, 2961, 3024, 3384, 3948, 4418, 5076, 5264, 5922, 6627, 6768, 7896, 8836, 8883, 10152, 11844, 13254, 15463, 15792, 17672, 17766, 19881, 20304, 23688, 26508, 30926, 35344, 35532, 39762, 46389, 47376, 53016, 59643, 61852, 71064, 79524, 92778, 106032, 119286, 123704, 139167, 142128, 159048, 185556, 238572, 247408, 278334, 318096, 371112, 417501, 477144, 556668, 742224, 835002, 954288, 1113336, 1670004, 2226672, 3340008, 6680016.
If you add them up, you will get the total of 6,680,031. Now subtract 6,680,016 to get 15,709,424