20157669

素因数分解:

$3^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{1063}}^1$

素因数の和:1126

約数の個数: 36

約数和(自身を含む): 34690656

約数和(自身を除く): 14532987

約数列:

[1, 3, 7, 9, 21, 43, 49, 63, 129, 147, 301, 387, 441, 903, 1063, 2107, 2709, 3189, 6321, 7441, 9567, 18963, 22323, 45709, 52087, 66969, 137127, 156261, 319963, 411381, 468783, 959889, 2239741, 2879667, 6719223, 20157669]

約数ペア:

[(1, 20157669), (3, 6719223), (7, 2879667), (9, 2239741), (21, 959889), (43, 468783), (49, 411381), (63, 319963), (129, 156261), (147, 137127), (301, 66969), (387, 52087), (441, 45709), (903, 22323), (1063, 18963), (2107, 9567), (2709, 7441), (3189, 6321)]