21057927

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{13577}}^1$

素因数の和:13638

約数の個数: 16

約数和(自身を含む): 31283712

約数和(自身を除く): 10225785

約数列:

[1, 3, 11, 33, 47, 141, 517, 1551, 13577, 40731, 149347, 448041, 638119, 1914357, 7019309, 21057927]

約数ペア:

[(1, 21057927), (3, 7019309), (11, 1914357), (33, 638119), (47, 448041), (141, 149347), (517, 40731), (1551, 13577)]