The factors of the number 881,790 are: 1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 17, 19, 21, 26, 30, 34, 35, 38, 39, 42, 51, 57, 65, 70, 78, 85, 91, 95, 102, 105, 114, 119, 130, 133, 170, 182, 190, 195, 210, 221, 238, 247, 255, 266, 273, 285, 323, 357, 390, 399, 442, 455, 494, 510, 546, 570, 595, 646, 663, 665, 714, 741, 798, 910, 969, 1105, 1190, 1235, 1326, 1330, 1365, 1482, 1547, 1615, 1729, 1785, 1938, 1995, 2210, 2261, 2470, 2730, 3094, 3230, 3315, 3458, 3570, 3705, 3990, 4199, 4522, 4641, 4845, 5187, 6630, 6783, 7410, 7735, 8398, 8645, 9282, 9690, 10374, 11305, 12597, 13566, 15470, 17290, 20995, 22610, 23205, 25194, 25935, 29393, 33915, 41990, 46410, 51870, 58786, 62985, 67830, 88179, 125970, 146965, 176358, 293930, 440895, 881790.
If you add them up, you will get the total of 2,903,040.