The factors of the number 280,473,138 are: 1, 2, 3, 6, 9, 11, 18, 22, 27, 33, 53, 54, 59, 66, 99, 106, 118, 151, 159, 177, 198, 297, 302, 318, 354, 453, 477, 531, 583, 594, 649, 906, 954, 1062, 1166, 1298, 1359, 1431, 1593, 1661, 1749, 1947, 2718, 2862, 3127, 3186, 3322, 3498, 3894, 4077, 4983, 5247, 5841, 6254, 8003, 8154, 8909, 9381, 9966, 10494, 11682, 14949, 15741, 16006, 17523, 17818, 18762, 24009, 26727, 28143, 29898, 31482, 34397, 35046, 44847, 48018, 53454, 56286, 68794, 72027, 80181, 84429, 88033, 89694, 97999, 103191, 144054, 160362, 168858, 176066, 195998, 206382, 216081, 240543, 264099, 293997, 309573, 432162, 472177, 481086, 528198, 587994, 619146, 792297, 881991, 928719, 944354, 1416531, 1584594, 1763982, 1857438, 2376891, 2645973, 2833062, 4249593, 4753782, 5193947, 5291946, 8499186, 10387894, 12748779, 15581841, 25497558, 31163682, 46745523, 93491046, 140236569, 280473138.
If you add them up, you will get the total of 280,473,566. Now subtract 280,473,138 to get 428,698,062