The factors of the number 423,466,560 are: 1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 32, 33, 36, 40, 44, 45, 48, 55, 60, 64, 66, 72, 80, 88, 90, 96, 99, 110, 120, 132, 144, 160, 165, 176, 180, 192, 198, 220, 240, 264, 288, 320, 330, 352, 360, 396, 440, 480, 495, 528, 576, 660, 704, 720, 792, 880, 960, 990, 1056, 1320, 1440, 1584, 1760, 1980, 2112, 2640, 2880, 3168, 3520, 3960, 5280, 6336, 7920, 10560, 13367, 15840, 26734, 31680, 40101, 53468, 66835, 80202, 106936, 120303, 133670, 147037, 160404, 200505, 213872, 240606, 267340, 294074, 320808, 401010, 427744, 441111, 481212, 534680, 588148, 601515, 641616, 735185, 802020, 855488, 882222, 962424, 1069360, 1176296, 1203030, 1283232, 1323333, 1470370, 1604040, 1764444, 1924848, 2138720, 2205555, 2352592, 2406060, 2566464, 2646666, 2940740, 3208080, 3528888, 3849696, 4277440, 4411110, 4705184, 4812120, 5293332, 5881480, 6416160, 6616665, 7057776, 7699392, 8822220, 9410368, 9624240, 10586664, 11762960, 12832320, 13233330, 14115552, 17644440, 19248480, 21173328, 23525920, 26466660, 28231104, 35288880, 38496960, 42346656, 47051840, 52933320, 70577760, 84693312, 105866640, 141155520, 211733280, 423466560.
If you add them up, you will get the total of 1,589,080,896.