21043473

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{1999}}^1$

素因数の和:2053

約数の個数: 24

約数和(自身を含む): 31920000

約数和(自身を除く): 10876527

約数列:

[1, 3, 11, 29, 33, 87, 121, 319, 363, 957, 1999, 3509, 5997, 10527, 21989, 57971, 65967, 173913, 241879, 637681, 725637, 1913043, 7014491, 21043473]

約数ペア:

[(1, 21043473), (3, 7014491), (11, 1913043), (29, 725637), (33, 637681), (87, 241879), (121, 173913), (319, 65967), (363, 57971), (957, 21989), (1999, 10527), (3509, 5997)]