21577281

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{313}}^1\times {\mathrm{2089}}^1$

素因数の和:2416

約数の個数: 16

約数和(自身を含む): 31500480

約数和(自身を除く): 9923199

約数列:

[1, 3, 11, 33, 313, 939, 2089, 3443, 6267, 10329, 22979, 68937, 653857, 1961571, 7192427, 21577281]

約数ペア:

[(1, 21577281), (3, 7192427), (11, 1961571), (33, 653857), (313, 68937), (939, 22979), (2089, 10329), (3443, 6267)]