128484260

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1\times {\mathrm{643}}^1$

素因数の和:852

約数の個数: 48

約数和(自身を含む): 275673216

約数和(自身を除く): 147188956

約数列:

[1, 2, 4, 5, 10, 20, 97, 103, 194, 206, 388, 412, 485, 515, 643, 970, 1030, 1286, 1940, 2060, 2572, 3215, 6430, 9991, 12860, 19982, 39964, 49955, 62371, 66229, 99910, 124742, 132458, 199820, 249484, 264916, 311855, 331145, 623710, 662290, 1247420, 1324580, 6424213, 12848426, 25696852, 32121065, 64242130, 128484260]

約数ペア:

[(1, 128484260), (2, 64242130), (4, 32121065), (5, 25696852), (10, 12848426), (20, 6424213), (97, 1324580), (103, 1247420), (194, 662290), (206, 623710), (388, 331145), (412, 311855), (485, 264916), (515, 249484), (643, 199820), (970, 132458), (1030, 124742), (1286, 99910), (1940, 66229), (2060, 62371), (2572, 49955), (3215, 39964), (6430, 19982), (9991, 12860)]