The factors of the number 261,354,000 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 40, 43, 48, 50, 60, 75, 80, 86, 100, 120, 125, 129, 150, 172, 200, 215, 240, 250, 258, 300, 344, 375, 400, 430, 500, 516, 600, 645, 688, 750, 860, 1000, 1013, 1032, 1075, 1200, 1290, 1500, 1720, 2000, 2026, 2064, 2150, 2580, 3000, 3039, 3225, 3440, 4052, 4300, 5065, 5160, 5375, 6000, 6078, 6450, 8104, 8600, 10130, 10320, 10750, 12156, 12900, 15195, 16125, 16208, 17200, 20260, 21500, 24312, 25325, 25800, 30390, 32250, 40520, 43000, 43559, 48624, 50650, 51600, 60780, 64500, 75975, 81040, 86000, 87118, 101300, 121560, 126625, 129000, 130677, 151950, 174236, 202600, 217795, 243120, 253250, 258000, 261354, 303900, 348472, 379875, 405200, 435590, 506500, 522708, 607800, 653385, 696944, 759750, 871180, 1013000, 1045416, 1088975, 1215600, 1306770, 1519500, 1742360, 2026000, 2090832, 2177950, 2613540, 3039000, 3266925, 3484720, 4355900, 5227080, 5444875, 6078000, 6533850, 8711800, 10454160, 10889750, 13067700, 16334625, 17423600, 21779500, 26135400, 32669250, 43559000, 52270800, 65338500, 87118000, 130677000, 261354000.
If you add them up, you will get the total of 863,051,904.