The factors of the number 400,044,216 are: 1, 2, 3, 4, 6, 8, 11, 12, 13, 22, 24, 26, 33, 39, 41, 44, 52, 66, 78, 82, 88, 104, 123, 132, 143, 156, 164, 246, 264, 286, 312, 328, 429, 451, 492, 533, 572, 858, 902, 984, 1066, 1144, 1353, 1599, 1716, 1804, 2132, 2706, 2843, 3198, 3432, 3608, 4264, 5412, 5686, 5863, 6396, 8529, 10824, 11372, 11726, 12792, 17058, 17589, 22744, 23452, 31273, 34116, 35178, 36959, 46904, 62546, 68232, 70356, 73918, 93819, 110877, 116563, 125092, 140712, 147836, 187638, 221754, 233126, 250184, 295672, 349689, 375276, 406549, 443508, 466252, 699378, 750552, 813098, 887016, 932504, 1219647, 1282193, 1398756, 1515319, 1626196, 2439294, 2564386, 2797512, 3030638, 3252392, 3846579, 4545957, 4878588, 5128772, 6061276, 7693158, 9091914, 9757176, 10257544, 12122552, 15386316, 16668509, 18183828, 30772632, 33337018, 36367656, 50005527, 66674036, 100011054, 133348072, 200022108, 400044216.
If you add them up, you will get the total of 1,204,035,840.