21099956

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{313}}^1\times {\mathrm{887}}^1$

素因数の和:1223

約数の個数: 24

約数和(自身を含む): 39036480

約数和(自身を除く): 17936524

約数列:

[1, 2, 4, 19, 38, 76, 313, 626, 887, 1252, 1774, 3548, 5947, 11894, 16853, 23788, 33706, 67412, 277631, 555262, 1110524, 5274989, 10549978, 21099956]

約数ペア:

[(1, 21099956), (2, 10549978), (4, 5274989), (19, 1110524), (38, 555262), (76, 277631), (313, 67412), (626, 33706), (887, 23788), (1252, 16853), (1774, 11894), (3548, 5947)]