The factors of the number 6,918,408 are: 1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 28, 36, 37, 42, 49, 53, 56, 63, 72, 74, 84, 98, 106, 111, 126, 147, 148, 159, 168, 196, 212, 222, 252, 259, 294, 296, 318, 333, 371, 392, 424, 441, 444, 477, 504, 518, 588, 636, 666, 742, 777, 882, 888, 954, 1036, 1113, 1176, 1272, 1332, 1484, 1554, 1764, 1813, 1908, 1961, 2072, 2226, 2331, 2597, 2664, 2968, 3108, 3339, 3528, 3626, 3816, 3922, 4452, 4662, 5194, 5439, 5883, 6216, 6678, 7252, 7791, 7844, 8904, 9324, 10388, 10878, 11766, 13356, 13727, 14504, 15582, 15688, 16317, 17649, 18648, 20776, 21756, 23373, 23532, 26712, 27454, 31164, 32634, 35298, 41181, 43512, 46746, 47064, 54908, 62328, 65268, 70596, 82362, 93492, 96089, 109816, 123543, 130536, 141192, 164724, 186984, 192178, 247086, 288267, 329448, 384356, 494172, 576534, 768712, 864801, 988344, 1153068, 1729602, 2306136, 3459204, 6918408.
If you add them up, you will get the total of 6,918,423. Now subtract 6,918,408 to get 15,889,572