The factors of the number 540,656,256 are: 1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 56, 64, 84, 96, 112, 128, 168, 192, 197, 224, 336, 384, 394, 448, 591, 672, 788, 896, 1021, 1182, 1344, 1379, 1576, 2042, 2364, 2688, 2758, 3063, 3152, 4084, 4137, 4728, 5516, 6126, 6304, 7147, 8168, 8274, 9456, 11032, 12252, 12608, 14294, 16336, 16548, 18912, 21441, 22064, 24504, 25216, 28588, 32672, 33096, 37824, 42882, 44128, 49008, 57176, 65344, 66192, 75648, 85764, 88256, 98016, 114352, 130688, 132384, 171528, 176512, 196032, 201137, 228704, 264768, 343056, 392064, 402274, 457408, 529536, 603411, 686112, 804548, 914816, 1206822, 1372224, 1407959, 1609096, 2413644, 2744448, 2815918, 3218192, 4223877, 4827288, 5631836, 6436384, 8447754, 9654576, 11263672, 12872768, 16895508, 19309152, 22527344, 25745536, 33791016, 38618304, 45054688, 67582032, 77236608, 90109376, 135164064, 180218752, 270328128, 540656256.
If you add them up, you will get the total of 1,651,224,960.