The factors of the number 502,740 are: 1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 19, 20, 21, 27, 28, 30, 35, 36, 38, 42, 45, 49, 54, 57, 60, 63, 70, 76, 84, 90, 95, 98, 105, 108, 114, 126, 133, 135, 140, 147, 171, 180, 189, 190, 196, 210, 228, 245, 252, 266, 270, 285, 294, 315, 342, 378, 380, 399, 420, 441, 490, 513, 532, 540, 570, 588, 630, 665, 684, 735, 756, 798, 855, 882, 931, 945, 980, 1026, 1140, 1197, 1260, 1323, 1330, 1470, 1596, 1710, 1764, 1862, 1890, 1995, 2052, 2205, 2394, 2565, 2646, 2660, 2793, 2940, 3420, 3591, 3724, 3780, 3990, 4410, 4655, 4788, 5130, 5292, 5586, 5985, 6615, 7182, 7980, 8379, 8820, 9310, 10260, 11172, 11970, 13230, 13965, 14364, 16758, 17955, 18620, 23940, 25137, 26460, 27930, 33516, 35910, 41895, 50274, 55860, 71820, 83790, 100548, 125685, 167580, 251370, 502740.
If you add them up, you will get the total of 1,915,200.