The factors of the number 6,662,880 are: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 210, 224, 240, 252, 280, 288, 315, 336, 360, 420, 480, 504, 560, 630, 661, 672, 720, 840, 1008, 1120, 1260, 1322, 1440, 1680, 1983, 2016, 2520, 2644, 3305, 3360, 3966, 4627, 5040, 5288, 5949, 6610, 7932, 9254, 9915, 10080, 10576, 11898, 13220, 13881, 15864, 18508, 19830, 21152, 23135, 23796, 26440, 27762, 29745, 31728, 37016, 39660, 41643, 46270, 47592, 52880, 55524, 59490, 63456, 69405, 74032, 79320, 83286, 92540, 95184, 105760, 111048, 118980, 138810, 148064, 158640, 166572, 185080, 190368, 208215, 222096, 237960, 277620, 317280, 333144, 370160, 416430, 444192, 475920, 555240, 666288, 740320, 832860, 951840, 1110480, 1332576, 1665720, 2220960, 3331440, 6662880.
If you add them up, you will get the total of 26,024,544.