The factors of the number 407,551,824 are: 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 19, 24, 27, 36, 38, 48, 54, 57, 72, 76, 81, 108, 114, 144, 152, 162, 171, 216, 228, 243, 304, 324, 342, 432, 456, 486, 513, 613, 648, 684, 729, 912, 972, 1026, 1226, 1296, 1368, 1458, 1539, 1839, 1944, 2052, 2187, 2452, 2736, 2916, 3078, 3678, 3888, 4104, 4374, 4617, 4904, 5517, 5832, 6156, 7356, 8208, 8748, 9234, 9808, 11034, 11647, 11664, 12312, 13851, 14712, 16551, 17496, 18468, 22068, 23294, 24624, 27702, 29424, 33102, 34941, 34992, 36936, 41553, 44136, 46588, 49653, 55404, 66204, 69882, 73872, 83106, 88272, 93176, 99306, 104823, 110808, 132408, 139764, 148959, 166212, 186352, 198612, 209646, 221616, 264816, 279528, 297918, 314469, 332424, 397224, 419292, 446877, 559056, 595836, 628938, 664848, 794448, 838584, 893754, 943407, 1191672, 1257876, 1340631, 1677168, 1787508, 1886814, 2383344, 2515752, 2681262, 2830221, 3575016, 3773628, 5031504, 5362524, 5660442, 7150032, 7547256, 8490663, 10725048, 11320884, 15094512, 16981326, 21450096, 22641768, 25471989, 33962652, 45283536, 50943978, 67925304, 101887956, 135850608, 203775912, 407551824.
If you add them up, you will get the total of 1,248,630,400.