21238514

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{13597}}^1$

素因数の和:13681

約数の個数: 16

約数和(自身を含む): 35246016

約数和(自身を除く): 14007502

約数列:

[1, 2, 11, 22, 71, 142, 781, 1562, 13597, 27194, 149567, 299134, 965387, 1930774, 10619257, 21238514]

約数ペア:

[(1, 21238514), (2, 10619257), (11, 1930774), (22, 965387), (71, 299134), (142, 149567), (781, 27194), (1562, 13597)]