21359767

素因数分解:

${\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{367}}^1$

素因数の和:439

約数の個数: 24

約数和(自身を含む): 26038208

約数和(自身を除く): 4678441

約数列:

[1, 11, 13, 37, 121, 143, 367, 407, 481, 1573, 4037, 4477, 4771, 5291, 13579, 44407, 52481, 58201, 149369, 176527, 577291, 1643059, 1941797, 21359767]

約数ペア:

[(1, 21359767), (11, 1941797), (13, 1643059), (37, 577291), (121, 176527), (143, 149369), (367, 58201), (407, 52481), (481, 44407), (1573, 13579), (4037, 5291), (4477, 4771)]