1279144640

素因数分解:

$2^6\times 5^1\times {\mathrm{103}}^1\times {\mathrm{197}}^2$

素因数の和:514

約数の個数: 84

約数和(自身を含む): 3091226736

約数和(自身を除く): 1812082096

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 103, 160, 197, 206, 320, 394, 412, 515, 788, 824, 985, 1030, 1576, 1648, 1970, 2060, 3152, 3296, 3940, 4120, 6304, 6592, 7880, 8240, 12608, 15760, 16480, 20291, 31520, 32960, 38809, 40582, 63040, 77618, 81164, 101455, 155236, 162328, 194045, 202910, 310472, 324656, 388090, 405820, 620944, 649312, 776180, 811640, 1241888, 1298624, 1552360, 1623280, 2483776, 3104720, 3246560, 3997327, 6209440, 6493120, 7994654, 12418880, 15989308, 19986635, 31978616, 39973270, 63957232, 79946540, 127914464, 159893080, 255828928, 319786160, 639572320, 1279144640]

約数ペア:

[(1, 1279144640), (2, 639572320), (4, 319786160), (5, 255828928), (8, 159893080), (10, 127914464), (16, 79946540), (20, 63957232), (32, 39973270), (40, 31978616), (64, 19986635), (80, 15989308), (103, 12418880), (160, 7994654), (197, 6493120), (206, 6209440), (320, 3997327), (394, 3246560), (412, 3104720), (515, 2483776), (788, 1623280), (824, 1552360), (985, 1298624), (1030, 1241888), (1576, 811640), (1648, 776180), (1970, 649312), (2060, 620944), (3152, 405820), (3296, 388090), (3940, 324656), (4120, 310472), (6304, 202910), (6592, 194045), (7880, 162328), (8240, 155236), (12608, 101455), (15760, 81164), (16480, 77618), (20291, 63040), (31520, 40582), (32960, 38809)]