The factors of the number 402,111,360 are: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 128, 140, 144, 160, 168, 180, 192, 210, 224, 240, 252, 280, 288, 315, 320, 336, 360, 384, 420, 448, 480, 504, 560, 576, 630, 640, 672, 720, 840, 896, 960, 1008, 1120, 1152, 1260, 1344, 1440, 1680, 1920, 2016, 2240, 2520, 2688, 2880, 3360, 4032, 4480, 5040, 5760, 6720, 8064, 9973, 10080, 13440, 19946, 20160, 29919, 39892, 40320, 49865, 59838, 69811, 79784, 89757, 99730, 119676, 139622, 149595, 159568, 179514, 199460, 209433, 239352, 279244, 299190, 319136, 349055, 359028, 398920, 418866, 448785, 478704, 558488, 598380, 628299, 638272, 698110, 718056, 797840, 837732, 897570, 957408, 1047165, 1116976, 1196760, 1256598, 1276544, 1396220, 1436112, 1595680, 1675464, 1795140, 1914816, 2094330, 2233952, 2393520, 2513196, 2792440, 2872224, 3141495, 3191360, 3350928, 3590280, 3829632, 4188660, 4467904, 4787040, 5026392, 5584880, 5744448, 6282990, 6382720, 6701856, 7180560, 8377320, 8935808, 9574080, 10052784, 11169760, 11488896, 12565980, 13403712, 14361120, 16754640, 19148160, 20105568, 22339520, 25131960, 26807424, 28722240, 33509280, 40211136, 44679040, 50263920, 57444480, 67018560, 80422272, 100527840, 134037120, 201055680, 402111360.
If you add them up, you will get the total of 1,587,062,880.