66526720

素因数分解:

$2^9\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1999}}^1$

素因数の和:2035

約数の個数: 80

約数和(自身を含む): 171864000

約数和(自身を除く): 105337280

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 512, 520, 640, 832, 1040, 1280, 1664, 1999, 2080, 2560, 3328, 3998, 4160, 6656, 7996, 8320, 9995, 15992, 16640, 19990, 25987, 31984, 33280, 39980, 51974, 63968, 79960, 103948, 127936, 129935, 159920, 207896, 255872, 259870, 319840, 415792, 511744, 519740, 639680, 831584, 1023488, 1039480, 1279360, 1663168, 2078960, 2558720, 3326336, 4157920, 5117440, 6652672, 8315840, 13305344, 16631680, 33263360, 66526720]

約数ペア:

[(1, 66526720), (2, 33263360), (4, 16631680), (5, 13305344), (8, 8315840), (10, 6652672), (13, 5117440), (16, 4157920), (20, 3326336), (26, 2558720), (32, 2078960), (40, 1663168), (52, 1279360), (64, 1039480), (65, 1023488), (80, 831584), (104, 639680), (128, 519740), (130, 511744), (160, 415792), (208, 319840), (256, 259870), (260, 255872), (320, 207896), (416, 159920), (512, 129935), (520, 127936), (640, 103948), (832, 79960), (1040, 63968), (1280, 51974), (1664, 39980), (1999, 33280), (2080, 31984), (2560, 25987), (3328, 19990), (3998, 16640), (4160, 15992), (6656, 9995), (7996, 8320)]