The factors of the number 771,451,648 are: 1, 2, 4, 8, 11, 16, 22, 23, 32, 43, 44, 46, 64, 86, 88, 92, 128, 172, 176, 184, 253, 256, 277, 344, 352, 368, 473, 506, 554, 688, 704, 736, 946, 989, 1012, 1108, 1376, 1408, 1472, 1892, 1978, 2024, 2216, 2752, 2816, 2944, 3047, 3784, 3956, 4048, 4432, 5504, 5888, 6094, 6371, 7568, 7912, 8096, 8864, 10879, 11008, 11911, 12188, 12742, 15136, 15824, 16192, 17728, 21758, 23822, 24376, 25484, 30272, 31648, 32384, 35456, 43516, 47644, 48752, 50968, 60544, 63296, 64768, 70081, 70912, 87032, 95288, 97504, 101936, 121088, 126592, 131021, 140162, 174064, 190576, 195008, 203872, 253184, 262042, 273953, 280324, 348128, 381152, 390016, 407744, 524084, 547906, 560648, 696256, 762304, 780032, 815488, 1048168, 1095812, 1121296, 1392512, 1524608, 1630976, 2096336, 2191624, 2242592, 2785024, 3013483, 3049216, 4192672, 4383248, 4485184, 6026966, 8385344, 8766496, 8970368, 12053932, 16770688, 17532992, 17940736, 24107864, 33541376, 35065984, 48215728, 70131968, 96431456, 192862912, 385725824, 771451648.
If you add them up, you will get the total of 1,800,158,976.