20287729

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{7121}}^1$

素因数の和:7176

約数の個数: 16

約数和(自身を含む): 25981056

約数和(自身を除く): 5693327

約数列:

[1, 7, 11, 37, 77, 259, 407, 2849, 7121, 49847, 78331, 263477, 548317, 1844339, 2898247, 20287729]

約数ペア:

[(1, 20287729), (7, 2898247), (11, 1844339), (37, 548317), (77, 263477), (259, 78331), (407, 49847), (2849, 7121)]