The factors of the number 16,218,864 are: 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 23, 24, 36, 46, 48, 59, 69, 72, 83, 92, 118, 138, 144, 166, 177, 184, 207, 236, 249, 276, 332, 354, 368, 414, 472, 498, 531, 552, 664, 708, 747, 828, 944, 996, 1062, 1104, 1328, 1357, 1416, 1494, 1656, 1909, 1992, 2124, 2714, 2832, 2988, 3312, 3818, 3984, 4071, 4248, 4897, 5428, 5727, 5976, 7636, 8142, 8496, 9794, 10856, 11454, 11952, 12213, 14691, 15272, 16284, 17181, 19588, 21712, 22908, 24426, 29382, 30544, 32568, 34362, 39176, 44073, 45816, 48852, 58764, 65136, 68724, 78352, 88146, 91632, 97704, 112631, 117528, 137448, 176292, 195408, 225262, 235056, 274896, 337893, 352584, 450524, 675786, 705168, 901048, 1013679, 1351572, 1802096, 2027358, 2703144, 4054716, 5406288, 8109432, 16218864.
If you add them up, you will get the total of 48,746,880.