The factors of the number 444,111,444 are: 1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 37, 42, 54, 63, 74, 84, 108, 111, 126, 148, 189, 222, 252, 259, 333, 378, 444, 518, 666, 756, 777, 999, 1036, 1332, 1554, 1998, 2331, 3108, 3996, 4662, 6993, 9324, 13986, 15877, 27972, 31754, 47631, 63508, 95262, 111139, 142893, 190524, 222278, 285786, 333417, 428679, 444556, 571572, 587449, 666834, 857358, 1000251, 1174898, 1333668, 1714716, 1762347, 2000502, 2349796, 3000753, 3524694, 4001004, 4112143, 5287041, 6001506, 7049388, 8224286, 10574082, 12003012, 12336429, 15861123, 16448572, 21148164, 24672858, 31722246, 37009287, 49345716, 63444492, 74018574, 111027861, 148037148, 222055722, 444111444.
If you add them up, you will get the total of 1,351,535,360.