The factors of the number 212,415,255 are: 1, 3, 5, 9, 13, 15, 17, 31, 39, 45, 51, 53, 65, 85, 93, 117, 153, 155, 159, 169, 195, 221, 255, 265, 279, 403, 465, 477, 507, 527, 585, 663, 689, 765, 795, 845, 901, 1105, 1209, 1395, 1521, 1581, 1643, 1989, 2015, 2067, 2385, 2535, 2635, 2703, 2873, 3315, 3445, 3627, 4505, 4743, 4929, 5239, 6045, 6201, 6851, 7605, 7905, 8109, 8215, 8619, 8957, 9945, 10335, 11713, 13515, 14365, 14787, 15717, 18135, 20553, 21359, 23715, 24645, 25857, 26195, 26871, 27931, 31005, 34255, 35139, 40545, 43095, 44785, 47151, 58565, 61659, 64077, 73935, 78585, 80613, 83793, 89063, 102765, 105417, 106795, 129285, 134355, 139655, 152269, 175695, 192231, 235755, 251379, 267189, 277667, 308295, 320385, 363103, 403065, 418965, 445315, 456807, 527085, 761345, 801567, 833001, 961155, 1089309, 1256895, 1335945, 1370421, 1388335, 1815515, 2284035, 2499003, 3267927, 4007835, 4165005, 4720339, 5446545, 6852105, 12495015, 14161017, 16339635, 23601695, 42483051, 70805085, 212415255.
If you add them up, you will get the total of 443,978,496.