The factors of the number 4,220,160 are: 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 80, 84, 96, 105, 112, 120, 128, 140, 157, 160, 168, 192, 210, 224, 240, 256, 280, 314, 320, 336, 384, 420, 448, 471, 480, 560, 628, 640, 672, 768, 785, 840, 896, 942, 960, 1099, 1120, 1256, 1280, 1344, 1570, 1680, 1792, 1884, 1920, 2198, 2240, 2355, 2512, 2688, 3140, 3297, 3360, 3768, 3840, 4396, 4480, 4710, 5024, 5376, 5495, 6280, 6594, 6720, 7536, 8792, 8960, 9420, 10048, 10990, 12560, 13188, 13440, 15072, 16485, 17584, 18840, 20096, 21980, 25120, 26376, 26880, 30144, 32970, 35168, 37680, 40192, 43960, 50240, 52752, 60288, 65940, 70336, 75360, 87920, 100480, 105504, 120576, 131880, 140672, 150720, 175840, 200960, 211008, 263760, 281344, 301440, 351680, 422016, 527520, 602880, 703360, 844032, 1055040, 1406720, 2110080, 4220160.
If you add them up, you will get the total of 15,501,696.