The factors of the number 777,740,000 are: 1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 37, 40, 50, 74, 80, 100, 125, 148, 160, 185, 200, 250, 296, 370, 400, 500, 592, 625, 740, 800, 925, 1000, 1051, 1184, 1250, 1480, 1850, 2000, 2102, 2500, 2960, 3700, 4000, 4204, 4625, 5000, 5255, 5920, 7400, 8408, 9250, 10000, 10510, 14800, 16816, 18500, 20000, 21020, 23125, 26275, 29600, 33632, 37000, 38887, 42040, 46250, 52550, 74000, 77774, 84080, 92500, 105100, 131375, 148000, 155548, 168160, 185000, 194435, 210200, 262750, 311096, 370000, 388870, 420400, 525500, 622192, 656875, 740000, 777740, 840800, 972175, 1051000, 1244384, 1313750, 1555480, 1944350, 2102000, 2627500, 3110960, 3888700, 4204000, 4860875, 5255000, 6221920, 7777400, 9721750, 10510000, 15554800, 19443500, 21020000, 24304375, 31109600, 38887000, 48608750, 77774000, 97217500, 155548000, 194435000, 388870000, 777740000.
If you add them up, you will get the total of 1,966,939,128.