259259

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1$

素因数の和:75

約数の個数: 24

約数和(自身を含む): 363888

約数和(自身を除く): 104629

約数列:

[1, 7, 11, 13, 37, 49, 77, 91, 143, 259, 407, 481, 539, 637, 1001, 1813, 2849, 3367, 5291, 7007, 19943, 23569, 37037, 259259]

約数ペア:

[(1, 259259), (7, 37037), (11, 23569), (13, 19943), (37, 7007), (49, 5291), (77, 3367), (91, 2849), (143, 1813), (259, 1001), (407, 637), (481, 539)]