The factors of the number 6,537,672 are: 1, 2, 3, 4, 6, 8, 9, 12, 18, 19, 24, 27, 36, 38, 54, 57, 59, 72, 76, 81, 108, 114, 118, 152, 162, 171, 177, 216, 228, 236, 243, 324, 342, 354, 456, 472, 486, 513, 531, 648, 684, 708, 729, 972, 1026, 1062, 1121, 1368, 1416, 1458, 1539, 1593, 1944, 2052, 2124, 2242, 2916, 3078, 3186, 3363, 4104, 4248, 4484, 4617, 4779, 5832, 6156, 6372, 6726, 8968, 9234, 9558, 10089, 12312, 12744, 13452, 13851, 14337, 18468, 19116, 20178, 26904, 27702, 28674, 30267, 36936, 38232, 40356, 43011, 55404, 57348, 60534, 80712, 86022, 90801, 110808, 114696, 121068, 172044, 181602, 242136, 272403, 344088, 363204, 544806, 726408, 817209, 1089612, 1634418, 2179224, 3268836, 6537672.
If you add them up, you will get the total of 19,674,000.