20254689

素因数分解:

$3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{3533}}^1$

素因数の和:3566

約数の個数: 36

約数和(自身を含む): 36661716

約数和(自身を除く): 16407027

約数列:

[1, 3, 7, 9, 13, 21, 39, 49, 63, 91, 117, 147, 273, 441, 637, 819, 1911, 3533, 5733, 10599, 24731, 31797, 45929, 74193, 137787, 173117, 222579, 321503, 413361, 519351, 964509, 1558053, 2250521, 2893527, 6751563, 20254689]

約数ペア:

[(1, 20254689), (3, 6751563), (7, 2893527), (9, 2250521), (13, 1558053), (21, 964509), (39, 519351), (49, 413361), (63, 321503), (91, 222579), (117, 173117), (147, 137787), (273, 74193), (441, 45929), (637, 31797), (819, 24731), (1911, 10599), (3533, 5733)]