19900661

素因数分解:

${\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1\times {\mathrm{307}}^1$

素因数の和:472

約数の個数: 16

約数和(自身を含む): 22353408

約数和(自身を除く): 2452747

約数列:

[1, 11, 71, 83, 307, 781, 913, 3377, 5893, 21797, 25481, 64823, 239767, 280291, 1809151, 19900661]

約数ペア:

[(1, 19900661), (11, 1809151), (71, 280291), (83, 239767), (307, 64823), (781, 25481), (913, 21797), (3377, 5893)]