The factors of the number 20,401,200 are: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 27, 30, 36, 40, 45, 48, 50, 54, 60, 72, 75, 80, 90, 100, 108, 120, 135, 144, 150, 180, 200, 216, 225, 240, 270, 300, 360, 400, 432, 450, 540, 600, 675, 720, 900, 1080, 1200, 1350, 1800, 1889, 2160, 2700, 3600, 3778, 5400, 5667, 7556, 9445, 10800, 11334, 15112, 17001, 18890, 22668, 28335, 30224, 34002, 37780, 45336, 47225, 51003, 56670, 68004, 75560, 85005, 90672, 94450, 102006, 113340, 136008, 141675, 151120, 170010, 188900, 204012, 226680, 255015, 272016, 283350, 340020, 377800, 408024, 425025, 453360, 510030, 566700, 680040, 755600, 816048, 850050, 1020060, 1133400, 1275075, 1360080, 1700100, 2040120, 2266800, 2550150, 3400200, 4080240, 5100300, 6800400, 10200600, 20401200.
If you add them up, you will get the total of 72,651,600.