The factors of the number 620,151,228 are: 1, 2, 3, 4, 6, 9, 12, 17, 18, 27, 34, 36, 37, 51, 54, 68, 74, 81, 102, 108, 111, 148, 153, 162, 179, 204, 222, 289, 306, 324, 333, 358, 444, 459, 537, 578, 612, 629, 666, 716, 867, 918, 999, 1074, 1156, 1258, 1332, 1377, 1611, 1734, 1836, 1887, 1998, 2148, 2516, 2601, 2754, 2997, 3043, 3222, 3468, 3774, 3996, 4833, 5202, 5508, 5661, 5994, 6086, 6444, 6623, 7548, 7803, 9129, 9666, 10404, 10693, 11322, 11988, 12172, 13246, 14499, 15606, 16983, 18258, 19332, 19869, 21386, 22644, 23409, 26492, 27387, 28998, 31212, 32079, 33966, 36516, 39738, 42772, 46818, 50949, 51731, 54774, 57996, 59607, 64158, 67932, 79476, 82161, 93636, 96237, 101898, 103462, 109548, 112591, 119214, 128316, 155193, 164322, 178821, 192474, 203796, 206924, 225182, 238428, 246483, 288711, 310386, 328644, 337773, 357642, 384948, 450364, 465579, 492966, 536463, 577422, 620772, 675546, 715284, 866133, 931158, 985932, 1013319, 1072926, 1154844, 1351092, 1396737, 1732266, 1862316, 1914047, 2026638, 2145852, 2793474, 3039957, 3464532, 3828094, 4053276, 4190211, 5586948, 5742141, 6079914, 7656188, 8380422, 9119871, 11484282, 12159828, 16760844, 17226423, 18239742, 22968564, 34452846, 36479484, 51679269, 68905692, 103358538, 155037807, 206717076, 310075614, 620151228.
If you add them up, you will get the total of 1,778,598,360.