21273791

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1361}}^1$

素因数の和:1415

約数の個数: 24

約数和(自身を含む): 27948240

約数和(自身を除く): 6674449

約数列:

[1, 7, 11, 29, 49, 77, 203, 319, 539, 1361, 1421, 2233, 9527, 14971, 15631, 39469, 66689, 104797, 276283, 434159, 733579, 1933981, 3039113, 21273791]

約数ペア:

[(1, 21273791), (7, 3039113), (11, 1933981), (29, 733579), (49, 434159), (77, 276283), (203, 104797), (319, 66689), (539, 39469), (1361, 15631), (1421, 14971), (2233, 9527)]