640428800

素因数分解:

$2^8\times 5^2\times {\mathrm{11}}^2\times {\mathrm{827}}^1$

素因数の和:875

約数の個数: 162

約数和(自身を含む): 1744474284

約数和(自身を除く): 1104045484

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 32, 40, 44, 50, 55, 64, 80, 88, 100, 110, 121, 128, 160, 176, 200, 220, 242, 256, 275, 320, 352, 400, 440, 484, 550, 605, 640, 704, 800, 827, 880, 968, 1100, 1210, 1280, 1408, 1600, 1654, 1760, 1936, 2200, 2420, 2816, 3025, 3200, 3308, 3520, 3872, 4135, 4400, 4840, 6050, 6400, 6616, 7040, 7744, 8270, 8800, 9097, 9680, 12100, 13232, 14080, 15488, 16540, 17600, 18194, 19360, 20675, 24200, 26464, 30976, 33080, 35200, 36388, 38720, 41350, 45485, 48400, 52928, 66160, 70400, 72776, 77440, 82700, 90970, 96800, 100067, 105856, 132320, 145552, 154880, 165400, 181940, 193600, 200134, 211712, 227425, 264640, 291104, 330800, 363880, 387200, 400268, 454850, 500335, 529280, 582208, 661600, 727760, 774400, 800536, 909700, 1000670, 1058560, 1164416, 1323200, 1455520, 1601072, 1819400, 2001340, 2328832, 2501675, 2646400, 2911040, 3202144, 3638800, 4002680, 5003350, 5292800, 5822080, 6404288, 7277600, 8005360, 10006700, 11644160, 12808576, 14555200, 16010720, 20013400, 25617152, 29110400, 32021440, 40026800, 58220800, 64042880, 80053600, 128085760, 160107200, 320214400, 640428800]

約数ペア:

[(1, 640428800), (2, 320214400), (4, 160107200), (5, 128085760), (8, 80053600), (10, 64042880), (11, 58220800), (16, 40026800), (20, 32021440), (22, 29110400), (25, 25617152), (32, 20013400), (40, 16010720), (44, 14555200), (50, 12808576), (55, 11644160), (64, 10006700), (80, 8005360), (88, 7277600), (100, 6404288), (110, 5822080), (121, 5292800), (128, 5003350), (160, 4002680), (176, 3638800), (200, 3202144), (220, 2911040), (242, 2646400), (256, 2501675), (275, 2328832), (320, 2001340), (352, 1819400), (400, 1601072), (440, 1455520), (484, 1323200), (550, 1164416), (605, 1058560), (640, 1000670), (704, 909700), (800, 800536), (827, 774400), (880, 727760), (968, 661600), (1100, 582208), (1210, 529280), (1280, 500335), (1408, 454850), (1600, 400268), (1654, 387200), (1760, 363880), (1936, 330800), (2200, 291104), (2420, 264640), (2816, 227425), (3025, 211712), (3200, 200134), (3308, 193600), (3520, 181940), (3872, 165400), (4135, 154880), (4400, 145552), (4840, 132320), (6050, 105856), (6400, 100067), (6616, 96800), (7040, 90970), (7744, 82700), (8270, 77440), (8800, 72776), (9097, 70400), (9680, 66160), (12100, 52928), (13232, 48400), (14080, 45485), (15488, 41350), (16540, 38720), (17600, 36388), (18194, 35200), (19360, 33080), (20675, 30976), (24200, 26464)]