19820218

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{12689}}^1$

素因数の和:12773

約数の個数: 16

約数和(自身を含む): 32892480

約数和(自身を除く): 13072262

約数列:

[1, 2, 11, 22, 71, 142, 781, 1562, 12689, 25378, 139579, 279158, 900919, 1801838, 9910109, 19820218]

約数ペア:

[(1, 19820218), (2, 9910109), (11, 1801838), (22, 900919), (71, 279158), (142, 139579), (781, 25378), (1562, 12689)]