The factors of the number 4,592,640 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 23, 24, 26, 30, 32, 39, 40, 46, 48, 52, 60, 64, 65, 69, 78, 80, 92, 96, 104, 115, 120, 128, 130, 138, 156, 160, 184, 192, 195, 208, 230, 240, 256, 260, 276, 299, 312, 320, 345, 368, 384, 390, 416, 460, 480, 512, 520, 552, 598, 624, 640, 690, 736, 768, 780, 832, 897, 920, 960, 1024, 1040, 1104, 1196, 1248, 1280, 1380, 1472, 1495, 1536, 1560, 1664, 1794, 1840, 1920, 2080, 2208, 2392, 2496, 2560, 2760, 2944, 2990, 3072, 3120, 3328, 3588, 3680, 3840, 4160, 4416, 4485, 4784, 4992, 5120, 5520, 5888, 5980, 6240, 6656, 7176, 7360, 7680, 8320, 8832, 8970, 9568, 9984, 11040, 11776, 11960, 12480, 13312, 14352, 14720, 15360, 16640, 17664, 17940, 19136, 19968, 22080, 23552, 23920, 24960, 28704, 29440, 33280, 35328, 35880, 38272, 39936, 44160, 47840, 49920, 57408, 58880, 66560, 70656, 71760, 76544, 88320, 95680, 99840, 114816, 117760, 143520, 153088, 176640, 191360, 199680, 229632, 287040, 306176, 353280, 382720, 459264, 574080, 765440, 918528, 1148160, 1530880, 2296320, 4592640.
If you add them up, you will get the total of 16,507,008.