638719040

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^3\times {\mathrm{67}}^1$

素因数の和:177

約数の個数: 112

約数和(自身を含む): 1595103744

約数和(自身を除く): 956384704

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 67, 80, 124, 134, 155, 160, 248, 268, 310, 320, 335, 496, 536, 620, 670, 961, 992, 1072, 1240, 1340, 1922, 1984, 2077, 2144, 2480, 2680, 3844, 4154, 4288, 4805, 4960, 5360, 7688, 8308, 9610, 9920, 10385, 10720, 15376, 16616, 19220, 20770, 21440, 29791, 30752, 33232, 38440, 41540, 59582, 61504, 64387, 66464, 76880, 83080, 119164, 128774, 132928, 148955, 153760, 166160, 238328, 257548, 297910, 307520, 321935, 332320, 476656, 515096, 595820, 643870, 664640, 953312, 1030192, 1191640, 1287740, 1906624, 1995997, 2060384, 2383280, 2575480, 3991994, 4120768, 4766560, 5150960, 7983988, 9533120, 9979985, 10301920, 15967976, 19959970, 20603840, 31935952, 39919940, 63871904, 79839880, 127743808, 159679760, 319359520, 638719040]

約数ペア:

[(1, 638719040), (2, 319359520), (4, 159679760), (5, 127743808), (8, 79839880), (10, 63871904), (16, 39919940), (20, 31935952), (31, 20603840), (32, 19959970), (40, 15967976), (62, 10301920), (64, 9979985), (67, 9533120), (80, 7983988), (124, 5150960), (134, 4766560), (155, 4120768), (160, 3991994), (248, 2575480), (268, 2383280), (310, 2060384), (320, 1995997), (335, 1906624), (496, 1287740), (536, 1191640), (620, 1030192), (670, 953312), (961, 664640), (992, 643870), (1072, 595820), (1240, 515096), (1340, 476656), (1922, 332320), (1984, 321935), (2077, 307520), (2144, 297910), (2480, 257548), (2680, 238328), (3844, 166160), (4154, 153760), (4288, 148955), (4805, 132928), (4960, 128774), (5360, 119164), (7688, 83080), (8308, 76880), (9610, 66464), (9920, 64387), (10385, 61504), (10720, 59582), (15376, 41540), (16616, 38440), (19220, 33232), (20770, 30752), (21440, 29791)]