The factors of the number 2,148,900 are: 1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 19, 20, 25, 26, 29, 30, 38, 39, 50, 52, 57, 58, 60, 65, 75, 76, 78, 87, 95, 100, 114, 116, 130, 145, 150, 156, 174, 190, 195, 228, 247, 260, 285, 290, 300, 325, 348, 377, 380, 390, 435, 475, 494, 551, 570, 580, 650, 725, 741, 754, 780, 870, 950, 975, 988, 1102, 1131, 1140, 1235, 1300, 1425, 1450, 1482, 1508, 1653, 1740, 1885, 1900, 1950, 2175, 2204, 2262, 2470, 2755, 2850, 2900, 2964, 3306, 3705, 3770, 3900, 4350, 4524, 4940, 5510, 5655, 5700, 6175, 6612, 7163, 7410, 7540, 8265, 8700, 9425, 11020, 11310, 12350, 13775, 14326, 14820, 16530, 18525, 18850, 21489, 22620, 24700, 27550, 28275, 28652, 33060, 35815, 37050, 37700, 41325, 42978, 55100, 56550, 71630, 74100, 82650, 85956, 107445, 113100, 143260, 165300, 179075, 214890, 358150, 429780, 537225, 716300, 1074450, 2148900.
If you add them up, you will get the total of 7,291,200.