21086611

素因数分解:

$7^3\times {\mathrm{13}}^1\times {\mathrm{4729}}^1$

素因数の和:4763

約数の個数: 16

約数和(自身を含む): 26488000

約数和(自身を除く): 5401389

約数列:

[1, 7, 13, 49, 91, 343, 637, 4459, 4729, 33103, 61477, 231721, 430339, 1622047, 3012373, 21086611]

約数ペア:

[(1, 21086611), (7, 3012373), (13, 1622047), (49, 430339), (91, 231721), (343, 61477), (637, 33103), (4459, 4729)]