The factors of the number 7,806,780 are: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 61, 79, 81, 90, 108, 122, 135, 158, 162, 180, 183, 237, 244, 270, 305, 316, 324, 366, 395, 405, 474, 540, 549, 610, 711, 732, 790, 810, 915, 948, 1098, 1185, 1220, 1422, 1580, 1620, 1647, 1830, 2133, 2196, 2370, 2745, 2844, 3294, 3555, 3660, 4266, 4740, 4819, 4941, 5490, 6399, 6588, 7110, 8235, 8532, 9638, 9882, 10665, 10980, 12798, 14220, 14457, 16470, 19276, 19764, 21330, 24095, 24705, 25596, 28914, 31995, 32940, 42660, 43371, 48190, 49410, 57828, 63990, 72285, 86742, 96380, 98820, 127980, 130113, 144570, 173484, 216855, 260226, 289140, 390339, 433710, 520452, 650565, 780678, 867420, 1301130, 1561356, 1951695, 2602260, 3903390, 7806780.
If you add them up, you will get the total of 25,206,720.