217217

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1$

素因数の和:69

約数の個数: 24

約数和(自身を含む): 306432

約数和(自身を除く): 89215

約数列:

[1, 7, 11, 13, 31, 49, 77, 91, 143, 217, 341, 403, 539, 637, 1001, 1519, 2387, 2821, 4433, 7007, 16709, 19747, 31031, 217217]

約数ペア:

[(1, 217217), (7, 31031), (11, 19747), (13, 16709), (31, 7007), (49, 4433), (77, 2821), (91, 2387), (143, 1519), (217, 1001), (341, 637), (403, 539)]