The factors of the number 637,403,148 are: 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 83, 108, 166, 211, 249, 332, 337, 422, 498, 633, 674, 747, 844, 996, 1011, 1266, 1348, 1494, 1899, 2022, 2241, 2532, 2988, 3033, 3798, 4044, 4482, 5697, 6066, 7596, 8964, 9099, 11394, 12132, 17513, 18198, 22788, 27971, 35026, 36396, 52539, 55942, 70052, 71107, 83913, 105078, 111884, 142214, 157617, 167826, 210156, 213321, 251739, 284428, 315234, 335652, 426642, 472851, 503478, 630468, 639963, 755217, 853284, 945702, 1006956, 1279926, 1510434, 1891404, 1919889, 2559852, 3020868, 3839778, 5901881, 7679556, 11803762, 17705643, 23607524, 35411286, 53116929, 70822572, 106233858, 159350787, 212467716, 318701574, 637403148.
If you add them up, you will get the total of 1,685,349,120.