19970269

素因数分解:

${\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1\times {\mathrm{353}}^1$

素因数の和:540

約数の個数: 16

約数和(自身を含む): 22599360

約数和(自身を除く): 2629091

約数列:

[1, 11, 37, 139, 353, 407, 1529, 3883, 5143, 13061, 49067, 56573, 143671, 539737, 1815479, 19970269]

約数ペア:

[(1, 19970269), (11, 1815479), (37, 539737), (139, 143671), (353, 56573), (407, 49067), (1529, 13061), (3883, 5143)]