The factors of the number 2,648,940 are: 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 17, 20, 21, 28, 30, 34, 35, 42, 49, 51, 53, 60, 68, 70, 84, 85, 98, 102, 105, 106, 119, 140, 147, 159, 170, 196, 204, 210, 212, 238, 245, 255, 265, 294, 318, 340, 357, 371, 420, 476, 490, 510, 530, 588, 595, 636, 714, 735, 742, 795, 833, 901, 980, 1020, 1060, 1113, 1190, 1428, 1470, 1484, 1590, 1666, 1785, 1802, 1855, 2226, 2380, 2499, 2597, 2703, 2940, 3180, 3332, 3570, 3604, 3710, 4165, 4452, 4505, 4998, 5194, 5406, 5565, 6307, 7140, 7420, 7791, 8330, 9010, 9996, 10388, 10812, 11130, 12495, 12614, 12985, 13515, 15582, 16660, 18020, 18921, 22260, 24990, 25228, 25970, 27030, 31164, 31535, 37842, 38955, 44149, 49980, 51940, 54060, 63070, 75684, 77910, 88298, 94605, 126140, 132447, 155820, 176596, 189210, 220745, 264894, 378420, 441490, 529788, 662235, 882980, 1324470, 2648940.
If you add them up, you will get the total of 9,307,872.