The factors of the number 3,376,620 are: 1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 27, 30, 36, 37, 39, 45, 52, 54, 60, 65, 74, 78, 90, 108, 111, 117, 130, 135, 148, 156, 169, 180, 185, 195, 222, 234, 260, 270, 333, 338, 351, 370, 390, 444, 468, 481, 507, 540, 555, 585, 666, 676, 702, 740, 780, 845, 962, 999, 1014, 1110, 1170, 1332, 1404, 1443, 1521, 1665, 1690, 1755, 1924, 1998, 2028, 2220, 2340, 2405, 2535, 2886, 3042, 3330, 3380, 3510, 3996, 4329, 4563, 4810, 4995, 5070, 5772, 6084, 6253, 6660, 7020, 7215, 7605, 8658, 9126, 9620, 9990, 10140, 12506, 12987, 14430, 15210, 17316, 18252, 18759, 19980, 21645, 22815, 25012, 25974, 28860, 30420, 31265, 37518, 43290, 45630, 51948, 56277, 62530, 64935, 75036, 86580, 91260, 93795, 112554, 125060, 129870, 168831, 187590, 225108, 259740, 281385, 337662, 375180, 562770, 675324, 844155, 1125540, 1688310, 3376620.
If you add them up, you will get the total of 11,682,720.