The factors of the number 20,567,960 are: 1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 29, 34, 35, 40, 56, 58, 68, 70, 85, 116, 119, 136, 140, 145, 149, 170, 203, 232, 238, 280, 290, 298, 340, 406, 476, 493, 580, 595, 596, 680, 745, 812, 952, 986, 1015, 1043, 1160, 1190, 1192, 1490, 1624, 1972, 2030, 2086, 2380, 2465, 2533, 2980, 3451, 3944, 4060, 4172, 4321, 4760, 4930, 5066, 5215, 5960, 6902, 8120, 8344, 8642, 9860, 10132, 10430, 12665, 13804, 17255, 17284, 17731, 19720, 20264, 20860, 21605, 25330, 27608, 30247, 34510, 34568, 35462, 41720, 43210, 50660, 60494, 69020, 70924, 73457, 86420, 88655, 101320, 120988, 138040, 141848, 146914, 151235, 172840, 177310, 241976, 293828, 302470, 354620, 367285, 514199, 587656, 604940, 709240, 734570, 1028398, 1209880, 1469140, 2056796, 2570995, 2938280, 4113592, 5141990, 10283980, 20567960.
If you add them up, you will get the total of 58,320,000.