The factors of the number 15,631,440 are: 1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 31, 33, 40, 44, 48, 55, 60, 62, 66, 80, 88, 93, 110, 120, 124, 132, 155, 165, 176, 186, 191, 220, 240, 248, 264, 310, 330, 341, 372, 382, 440, 465, 496, 528, 573, 620, 660, 682, 744, 764, 880, 930, 955, 1023, 1146, 1240, 1320, 1364, 1488, 1528, 1705, 1860, 1910, 2046, 2101, 2292, 2480, 2640, 2728, 2865, 3056, 3410, 3720, 3820, 4092, 4202, 4584, 5115, 5456, 5730, 5921, 6303, 6820, 7440, 7640, 8184, 8404, 9168, 10230, 10505, 11460, 11842, 12606, 13640, 15280, 16368, 16808, 17763, 20460, 21010, 22920, 23684, 25212, 27280, 29605, 31515, 33616, 35526, 40920, 42020, 45840, 47368, 50424, 59210, 63030, 65131, 71052, 81840, 84040, 88815, 94736, 100848, 118420, 126060, 130262, 142104, 168080, 177630, 195393, 236840, 252120, 260524, 284208, 325655, 355260, 390786, 473680, 504240, 521048, 651310, 710520, 781572, 976965, 1042096, 1302620, 1421040, 1563144, 1953930, 2605240, 3126288, 3907860, 5210480, 7815720, 15631440.
If you add them up, you will get the total of 54,853,632.