The factors of the number 1,171,368 are: 1, 2, 3, 4, 6, 8, 9, 11, 12, 17, 18, 22, 24, 27, 29, 33, 34, 36, 44, 51, 54, 58, 66, 68, 72, 87, 88, 99, 102, 108, 116, 132, 136, 153, 174, 187, 198, 204, 216, 232, 261, 264, 297, 306, 319, 348, 374, 396, 408, 459, 493, 522, 561, 594, 612, 638, 696, 748, 783, 792, 918, 957, 986, 1044, 1122, 1188, 1224, 1276, 1479, 1496, 1566, 1683, 1836, 1914, 1972, 2088, 2244, 2376, 2552, 2871, 2958, 3132, 3366, 3672, 3828, 3944, 4437, 4488, 5049, 5423, 5742, 5916, 6264, 6732, 7656, 8613, 8874, 10098, 10846, 11484, 11832, 13311, 13464, 16269, 17226, 17748, 20196, 21692, 22968, 26622, 32538, 34452, 35496, 40392, 43384, 48807, 53244, 65076, 68904, 97614, 106488, 130152, 146421, 195228, 292842, 390456, 585684, 1171368.
If you add them up, you will get the total of 3,888,000.