The factors of the number 664,037,556 are: 1, 2, 3, 4, 6, 7, 12, 13, 14, 21, 26, 28, 39, 42, 52, 78, 84, 91, 97, 156, 182, 194, 273, 291, 364, 388, 546, 582, 679, 1092, 1164, 1261, 1358, 2037, 2522, 2716, 3783, 4074, 5044, 6269, 7566, 8148, 8827, 12538, 15132, 17654, 18807, 25076, 26481, 35308, 37614, 43883, 52962, 75228, 81497, 87766, 105924, 131649, 162994, 175532, 244491, 263298, 325988, 488982, 526596, 570479, 608093, 977964, 1140958, 1216186, 1711437, 1824279, 2281916, 2432372, 3422874, 3648558, 4256651, 6845748, 7297116, 7905209, 8513302, 12769953, 15810418, 17026604, 23715627, 25539906, 31620836, 47431254, 51079812, 55336463, 94862508, 110672926, 166009389, 221345852, 332018778, 664037556.
If you add them up, you will get the total of 1,926,946,560.