The factors of the number 531,171,564 are: 1, 2, 3, 4, 6, 7, 11, 12, 14, 21, 22, 28, 33, 41, 42, 44, 49, 66, 77, 82, 84, 98, 123, 132, 147, 154, 164, 196, 231, 246, 287, 294, 308, 451, 462, 492, 539, 574, 588, 861, 902, 924, 1078, 1148, 1353, 1617, 1722, 1804, 2003, 2009, 2156, 2706, 3157, 3234, 3444, 4006, 4018, 5412, 6009, 6027, 6314, 6468, 8012, 8036, 9471, 12018, 12054, 12628, 14021, 18942, 22033, 22099, 24036, 24108, 28042, 37884, 42063, 44066, 44198, 56084, 66099, 66297, 82123, 84126, 88132, 88396, 98147, 132198, 132594, 154231, 164246, 168252, 196294, 246369, 264396, 265188, 294441, 308462, 328492, 392588, 462693, 492738, 574861, 588882, 616924, 903353, 925386, 985476, 1079617, 1149722, 1177764, 1724583, 1806706, 1850772, 2159234, 2299444, 2710059, 3238851, 3449166, 3613412, 4024027, 4318468, 5420118, 6323471, 6477702, 6898332, 8048054, 10840236, 12072081, 12646942, 12955404, 16096108, 18970413, 24144162, 25293884, 37940826, 44264297, 48288324, 75881652, 88528594, 132792891, 177057188, 265585782, 531171564.
If you add them up, you will get the total of 1,611,985,536.