20131221

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{313}}^1\times {\mathrm{1949}}^1$

素因数の和:2276

約数の個数: 16

約数和(自身を含む): 29390400

約数和(自身を除く): 9259179

約数列:

[1, 3, 11, 33, 313, 939, 1949, 3443, 5847, 10329, 21439, 64317, 610037, 1830111, 6710407, 20131221]

約数ペア:

[(1, 20131221), (3, 6710407), (11, 1830111), (33, 610037), (313, 64317), (939, 21439), (1949, 10329), (3443, 5847)]