The factors of the number 324,671,646 are: 1, 2, 3, 6, 13, 26, 29, 39, 58, 61, 78, 87, 122, 169, 174, 181, 183, 338, 362, 366, 377, 507, 543, 754, 793, 1014, 1086, 1131, 1586, 1769, 2262, 2353, 2379, 3538, 4706, 4758, 4901, 5249, 5307, 7059, 9802, 10309, 10498, 10614, 11041, 14118, 14703, 15747, 20618, 22082, 22997, 29406, 30589, 30927, 31494, 33123, 45994, 61178, 61854, 66246, 68237, 68991, 91767, 136474, 137982, 143533, 183534, 204711, 287066, 298961, 320189, 409422, 430599, 597922, 640378, 861198, 887081, 896883, 960567, 1774162, 1793766, 1865929, 1921134, 2661243, 3731858, 4162457, 5322486, 5597787, 8324914, 11195574, 12487371, 24974742, 54111941, 108223882, 162335823, 324671646.
If you add them up, you will get the total of 743,389,920.