20997306

素因数分解:

$2^1\times 3^4\times {\mathrm{11}}^1\times {\mathrm{11783}}^1$

素因数の和:11808

約数の個数: 40

約数和(自身を含む): 51331104

約数和(自身を除く): 30333798

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 27, 33, 54, 66, 81, 99, 162, 198, 297, 594, 891, 1782, 11783, 23566, 35349, 70698, 106047, 129613, 212094, 259226, 318141, 388839, 636282, 777678, 954423, 1166517, 1908846, 2333034, 3499551, 6999102, 10498653, 20997306]

約数ペア:

[(1, 20997306), (2, 10498653), (3, 6999102), (6, 3499551), (9, 2333034), (11, 1908846), (18, 1166517), (22, 954423), (27, 777678), (33, 636282), (54, 388839), (66, 318141), (81, 259226), (99, 212094), (162, 129613), (198, 106047), (297, 70698), (594, 35349), (891, 23566), (1782, 11783)]