20121866849

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{283}}^1\times {\mathrm{2087}}^1$

素因数の和:2565

約数の個数: 32

約数和(自身を含む): 23985340416

約数和(自身を除く): 3863473567

約数列:

[1, 7, 31, 157, 217, 283, 1099, 1981, 2087, 4867, 8773, 14609, 34069, 44431, 61411, 64697, 311017, 327659, 452879, 590621, 1377361, 2293613, 4134347, 9641527, 10157429, 18309251, 71102003, 92727497, 128164757, 649092479, 2874552407, 20121866849]

約数ペア:

[(1, 20121866849), (7, 2874552407), (31, 649092479), (157, 128164757), (217, 92727497), (283, 71102003), (1099, 18309251), (1981, 10157429), (2087, 9641527), (4867, 4134347), (8773, 2293613), (14609, 1377361), (34069, 590621), (44431, 452879), (61411, 327659), (64697, 311017)]