28167909

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{1999}}^1$

素因数の和:2081

約数の個数: 32

約数和(自身を含む): 47616000

約数和(自身を除く): 19448091

約数列:

[1, 3, 7, 11, 21, 33, 61, 77, 183, 231, 427, 671, 1281, 1999, 2013, 4697, 5997, 13993, 14091, 21989, 41979, 65967, 121939, 153923, 365817, 461769, 853573, 1341329, 2560719, 4023987, 9389303, 28167909]

約数ペア:

[(1, 28167909), (3, 9389303), (7, 4023987), (11, 2560719), (21, 1341329), (33, 853573), (61, 461769), (77, 365817), (183, 153923), (231, 121939), (427, 65967), (671, 41979), (1281, 21989), (1999, 14091), (2013, 13993), (4697, 5997)]