257880320

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{97}}^1$

素因数の和:216

約数の個数: 144

約数和(自身を含む): 653818368

約数和(自身を除く): 395938048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 67, 80, 97, 124, 128, 134, 155, 160, 194, 248, 256, 268, 310, 320, 335, 388, 485, 496, 536, 620, 640, 670, 776, 970, 992, 1072, 1240, 1280, 1340, 1552, 1940, 1984, 2077, 2144, 2480, 2680, 3007, 3104, 3880, 3968, 4154, 4288, 4960, 5360, 6014, 6208, 6499, 7760, 7936, 8308, 8576, 9920, 10385, 10720, 12028, 12416, 12998, 15035, 15520, 16616, 17152, 19840, 20770, 21440, 24056, 24832, 25996, 30070, 31040, 32495, 33232, 39680, 41540, 42880, 48112, 51992, 60140, 62080, 64990, 66464, 83080, 85760, 96224, 103984, 120280, 124160, 129980, 132928, 166160, 192448, 201469, 207968, 240560, 259960, 265856, 332320, 384896, 402938, 415936, 481120, 519920, 531712, 664640, 769792, 805876, 831872, 962240, 1007345, 1039840, 1329280, 1611752, 1663744, 1924480, 2014690, 2079680, 2658560, 3223504, 3848960, 4029380, 4159360, 6447008, 8058760, 8318720, 12894016, 16117520, 25788032, 32235040, 51576064, 64470080, 128940160, 257880320]

約数ペア:

[(1, 257880320), (2, 128940160), (4, 64470080), (5, 51576064), (8, 32235040), (10, 25788032), (16, 16117520), (20, 12894016), (31, 8318720), (32, 8058760), (40, 6447008), (62, 4159360), (64, 4029380), (67, 3848960), (80, 3223504), (97, 2658560), (124, 2079680), (128, 2014690), (134, 1924480), (155, 1663744), (160, 1611752), (194, 1329280), (248, 1039840), (256, 1007345), (268, 962240), (310, 831872), (320, 805876), (335, 769792), (388, 664640), (485, 531712), (496, 519920), (536, 481120), (620, 415936), (640, 402938), (670, 384896), (776, 332320), (970, 265856), (992, 259960), (1072, 240560), (1240, 207968), (1280, 201469), (1340, 192448), (1552, 166160), (1940, 132928), (1984, 129980), (2077, 124160), (2144, 120280), (2480, 103984), (2680, 96224), (3007, 85760), (3104, 83080), (3880, 66464), (3968, 64990), (4154, 62080), (4288, 60140), (4960, 51992), (5360, 48112), (6014, 42880), (6208, 41540), (6499, 39680), (7760, 33232), (7936, 32495), (8308, 31040), (8576, 30070), (9920, 25996), (10385, 24832), (10720, 24056), (12028, 21440), (12416, 20770), (12998, 19840), (15035, 17152), (15520, 16616)]