The factors of the number 278,414,856 are: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 71, 72, 107, 142, 213, 214, 284, 321, 426, 428, 509, 568, 639, 642, 852, 856, 963, 1018, 1278, 1284, 1527, 1704, 1926, 2036, 2556, 2568, 3054, 3852, 4072, 4581, 5112, 6108, 7597, 7704, 9162, 12216, 15194, 18324, 22791, 30388, 36139, 36648, 45582, 54463, 60776, 68373, 72278, 91164, 108417, 108926, 136746, 144556, 163389, 182328, 216834, 217852, 273492, 289112, 325251, 326778, 433668, 435704, 490167, 546984, 650502, 653556, 867336, 980334, 1301004, 1307112, 1960668, 2602008, 3866873, 3921336, 7733746, 11600619, 15467492, 23201238, 30934984, 34801857, 46402476, 69603714, 92804952, 139207428, 278414856.
If you add them up, you will get the total of 278,415,350. Now subtract 278,414,856 to get 494,908,344