Q: What is the sum of all factors of the number 421,004,400 excluding 421,004,400?

Why is 999,738,000 the sum of all factors of 421,004,400, excluding 421,004,400?

The factors of the number 421,004,400 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 40, 41, 43, 48, 50, 60, 75, 80, 82, 86, 100, 120, 123, 129, 150, 164, 172, 199, 200, 205, 215, 240, 246, 258, 300, 328, 344, 398, 400, 410, 430, 492, 516, 597, 600, 615, 645, 656, 688, 796, 820, 860, 984, 995, 1025, 1032, 1075, 1194, 1200, 1230, 1290, 1592, 1640, 1720, 1763, 1968, 1990, 2050, 2064, 2150, 2388, 2460, 2580, 2985, 3075, 3184, 3225, 3280, 3440, 3526, 3980, 4100, 4300, 4776, 4920, 4975, 5160, 5289, 5970, 6150, 6450, 7052, 7960, 8159, 8200, 8557, 8600, 8815, 9552, 9840, 9950, 10320, 10578, 11940, 12300, 12900, 14104, 14925, 15920, 16318, 16400, 17114, 17200, 17630, 19900, 21156, 23880, 24477, 24600, 25671, 25800, 26445, 28208, 29850, 32636, 34228, 35260, 39800, 40795, 42312, 42785, 44075, 47760, 48954, 49200, 51342, 51600, 52890, 59700, 65272, 68456, 70520, 79600, 81590, 84624, 85570, 88150, 97908, 102684, 105780, 119400, 122385, 128355, 130544, 132225, 136912, 141040, 163180, 171140, 176300, 195816, 203975, 205368, 211560, 213925, 238800, 244770, 256710, 264450, 326360, 342280, 350837, 352600, 391632, 407950, 410736, 423120, 427850, 489540, 513420, 528900, 611925, 641775, 652720, 684560, 701674, 705200, 815900, 855700, 979080, 1026840, 1052511, 1057800, 1223850, 1283550, 1403348, 1631800, 1711400, 1754185, 1958160, 2053680, 2105022, 2115600, 2447700, 2567100, 2806696, 3263600, 3422800, 3508370, 4210044, 4895400, 5134200, 5262555, 5613392, 7016740, 8420088, 8770925, 9790800, 10268400, 10525110, 14033480, 16840176, 17541850, 21050220, 26312775, 28066960, 35083700, 42100440, 52625550, 70167400, 84200880, 105251100, 140334800, 210502200, 421004400.

If you add them up, you will get the total of 421,005,399. Now subtract 421,004,400 to get 999,738,000

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