21307341

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1999}}^1$

素因数の和:2049

約数の個数: 32

約数和(自身を含む): 34560000

約数和(自身を除く): 13252659

約数列:

[1, 3, 11, 17, 19, 33, 51, 57, 187, 209, 323, 561, 627, 969, 1999, 3553, 5997, 10659, 21989, 33983, 37981, 65967, 101949, 113943, 373813, 417791, 645677, 1121439, 1253373, 1937031, 7102447, 21307341]

約数ペア:

[(1, 21307341), (3, 7102447), (11, 1937031), (17, 1253373), (19, 1121439), (33, 645677), (51, 417791), (57, 373813), (187, 113943), (209, 101949), (323, 65967), (561, 37981), (627, 33983), (969, 21989), (1999, 10659), (3553, 5997)]