18277259

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2$

素因数の和:112

約数の個数: 48

約数和(自身を含む): 26691840

約数和(自身を除く): 8414581

約数列:

[1, 7, 11, 13, 19, 31, 77, 91, 133, 143, 209, 217, 247, 341, 403, 589, 961, 1001, 1463, 1729, 2387, 2717, 2821, 4123, 4433, 6479, 6727, 7657, 10571, 12493, 18259, 19019, 31031, 45353, 53599, 73997, 84227, 87451, 127813, 137423, 200849, 237367, 589589, 961961, 1405943, 1661569, 2611037, 18277259]

約数ペア:

[(1, 18277259), (7, 2611037), (11, 1661569), (13, 1405943), (19, 961961), (31, 589589), (77, 237367), (91, 200849), (133, 137423), (143, 127813), (209, 87451), (217, 84227), (247, 73997), (341, 53599), (403, 45353), (589, 31031), (961, 19019), (1001, 18259), (1463, 12493), (1729, 10571), (2387, 7657), (2717, 6727), (2821, 6479), (4123, 4433)]