The factors of the number 664,155,744 are: 1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 56, 84, 96, 112, 168, 224, 336, 359, 672, 718, 1077, 1436, 2154, 2513, 2753, 2872, 4308, 5026, 5506, 5744, 7539, 8259, 8616, 10052, 11012, 11488, 15078, 16518, 17232, 19271, 20104, 22024, 30156, 33036, 34464, 38542, 40208, 44048, 57813, 60312, 66072, 77084, 80416, 88096, 115626, 120624, 132144, 154168, 231252, 241248, 264288, 308336, 462504, 616672, 925008, 988327, 1850016, 1976654, 2964981, 3953308, 5929962, 6918289, 7906616, 11859924, 13836578, 15813232, 20754867, 23719848, 27673156, 31626464, 41509734, 47439696, 55346312, 83019468, 94879392, 110692624, 166038936, 221385248, 332077872, 664155744.
If you add them up, you will get the total of 1,998,743,040.