The factors of the number 1,818,180 are: 1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 27, 28, 30, 35, 36, 37, 39, 42, 45, 52, 54, 60, 63, 65, 70, 74, 78, 84, 90, 91, 105, 108, 111, 117, 126, 130, 135, 140, 148, 156, 180, 182, 185, 189, 195, 210, 222, 234, 252, 259, 260, 270, 273, 315, 333, 351, 364, 370, 378, 390, 420, 444, 455, 468, 481, 518, 540, 546, 555, 585, 630, 666, 702, 740, 756, 777, 780, 819, 910, 945, 962, 999, 1036, 1092, 1110, 1170, 1260, 1295, 1332, 1365, 1404, 1443, 1554, 1638, 1665, 1755, 1820, 1890, 1924, 1998, 2220, 2331, 2340, 2405, 2457, 2590, 2730, 2886, 3108, 3276, 3330, 3367, 3510, 3780, 3885, 3996, 4095, 4329, 4662, 4810, 4914, 4995, 5180, 5460, 5772, 6660, 6734, 6993, 7020, 7215, 7770, 8190, 8658, 9324, 9620, 9828, 9990, 10101, 11655, 12285, 12987, 13468, 13986, 14430, 15540, 16380, 16835, 17316, 19980, 20202, 21645, 23310, 24570, 25974, 27972, 28860, 30303, 33670, 34965, 40404, 43290, 46620, 49140, 50505, 51948, 60606, 64935, 67340, 69930, 86580, 90909, 101010, 121212, 129870, 139860, 151515, 181818, 202020, 259740, 303030, 363636, 454545, 606060, 909090, 1818180.
If you add them up, you will get the total of 7,150,080.