The factors of the number 813,843,264 are: 1, 2, 3, 4, 6, 8, 12, 13, 16, 19, 24, 26, 32, 38, 39, 48, 52, 57, 64, 76, 78, 96, 104, 114, 131, 152, 156, 192, 208, 228, 247, 262, 304, 312, 393, 416, 456, 494, 524, 608, 624, 741, 786, 832, 912, 988, 1048, 1216, 1248, 1482, 1572, 1703, 1824, 1976, 2096, 2489, 2496, 2964, 3144, 3406, 3648, 3952, 4192, 4978, 5109, 5928, 6288, 6812, 7467, 7904, 8384, 9956, 10218, 11856, 12576, 13624, 14934, 15808, 17161, 19912, 20436, 23712, 25152, 27248, 29868, 32357, 34322, 39824, 40872, 47424, 51483, 54496, 59736, 64714, 68644, 79648, 81744, 97071, 102966, 108992, 119472, 129428, 137288, 159296, 163488, 194142, 205932, 223093, 238944, 258856, 274576, 326059, 326976, 388284, 411864, 446186, 477888, 517712, 549152, 652118, 669279, 776568, 823728, 892372, 978177, 1035424, 1098304, 1304236, 1338558, 1553136, 1647456, 1784744, 1956354, 2070848, 2608472, 2677116, 3106272, 3294912, 3569488, 3912708, 4238767, 5216944, 5354232, 6212544, 7138976, 7825416, 8477534, 10433888, 10708464, 12716301, 14277952, 15650832, 16955068, 20867776, 21416928, 25432602, 31301664, 33910136, 42833856, 50865204, 62603328, 67820272, 101730408, 135640544, 203460816, 271281088, 406921632, 813843264.
If you add them up, you will get the total of 813,843,265. Now subtract 813,843,264 to get 1,645,913,056