The factors of the number 521,140,340 are: 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 70, 82, 140, 163, 164, 205, 287, 326, 410, 557, 574, 652, 815, 820, 1114, 1141, 1148, 1435, 1630, 2228, 2282, 2785, 2870, 3260, 3899, 4564, 5570, 5705, 5740, 6683, 7798, 11140, 11410, 13366, 15596, 19495, 22820, 22837, 26732, 33415, 38990, 45674, 46781, 66830, 77980, 90791, 91348, 93562, 114185, 133660, 159859, 181582, 187124, 228370, 233905, 319718, 363164, 453955, 456740, 467810, 635537, 639436, 799295, 907910, 935620, 1271074, 1598590, 1815820, 2542148, 3177685, 3197180, 3722431, 6355370, 7444862, 12710740, 14889724, 18612155, 26057017, 37224310, 52114034, 74448620, 104228068, 130285085, 260570170, 521140340.
If you add them up, you will get the total of 521,141,110. Now subtract 521,140,340 to get 770,277,004