The factors of the number 260,506,560 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 89, 96, 120, 160, 178, 192, 240, 267, 320, 356, 445, 480, 534, 712, 890, 960, 1068, 1335, 1424, 1780, 2136, 2670, 2848, 3049, 3560, 4272, 5340, 5696, 6098, 7120, 8544, 9147, 10680, 12196, 14240, 15245, 17088, 18294, 21360, 24392, 28480, 30490, 36588, 42720, 45735, 48784, 60980, 73176, 85440, 91470, 97568, 121960, 146352, 182940, 195136, 243920, 271361, 292704, 365880, 487840, 542722, 585408, 731760, 814083, 975680, 1085444, 1356805, 1463520, 1628166, 2170888, 2713610, 2927040, 3256332, 4070415, 4341776, 5427220, 6512664, 8140830, 8683552, 10854440, 13025328, 16281660, 17367104, 21708880, 26050656, 32563320, 43417760, 52101312, 65126640, 86835520, 130253280, 260506560.
If you add them up, you will get the total of 836,676,000.