The factors of the number 1,817,640 are: 1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 17, 18, 20, 22, 24, 27, 30, 33, 34, 36, 40, 44, 45, 51, 54, 55, 60, 66, 68, 72, 81, 85, 88, 90, 99, 102, 108, 110, 120, 132, 135, 136, 153, 162, 165, 170, 180, 187, 198, 204, 216, 220, 243, 255, 264, 270, 297, 306, 324, 330, 340, 360, 374, 396, 405, 408, 440, 459, 486, 495, 510, 540, 561, 594, 612, 648, 660, 680, 748, 765, 792, 810, 891, 918, 935, 972, 990, 1020, 1080, 1122, 1188, 1215, 1224, 1320, 1377, 1485, 1496, 1530, 1620, 1683, 1782, 1836, 1870, 1944, 1980, 2040, 2244, 2295, 2376, 2430, 2673, 2754, 2805, 2970, 3060, 3240, 3366, 3564, 3672, 3740, 3960, 4131, 4455, 4488, 4590, 4860, 5049, 5346, 5508, 5610, 5940, 6120, 6732, 6885, 7128, 7480, 8262, 8415, 8910, 9180, 9720, 10098, 10692, 11016, 11220, 11880, 13365, 13464, 13770, 15147, 16524, 16830, 17820, 18360, 20196, 20655, 21384, 22440, 25245, 26730, 27540, 30294, 33048, 33660, 35640, 40392, 41310, 45441, 50490, 53460, 55080, 60588, 67320, 75735, 82620, 90882, 100980, 106920, 121176, 151470, 165240, 181764, 201960, 227205, 302940, 363528, 454410, 605880, 908820, 1817640.
If you add them up, you will get the total of 7,076,160.