20518311

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^2\times {\mathrm{647}}^1$

素因数の和:723

約数の個数: 24

約数和(自身を含む): 30886272

約数和(自身を除く): 10367961

約数列:

[1, 3, 11, 31, 33, 93, 341, 647, 961, 1023, 1941, 2883, 7117, 10571, 20057, 21351, 31713, 60171, 220627, 621767, 661881, 1865301, 6839437, 20518311]

約数ペア:

[(1, 20518311), (3, 6839437), (11, 1865301), (31, 661881), (33, 621767), (93, 220627), (341, 60171), (647, 31713), (961, 21351), (1023, 20057), (1941, 10571), (2883, 7117)]