18812717

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{167}}^1$

素因数の和:222

約数の個数: 36

約数和(自身を含む): 25472160

約数和(自身を除く): 6659443

約数列:

[1, 7, 11, 19, 49, 77, 121, 133, 167, 209, 539, 847, 931, 1169, 1463, 1837, 2299, 3173, 5929, 8183, 10241, 12859, 16093, 20207, 22211, 34903, 90013, 112651, 141449, 155477, 244321, 383933, 990143, 1710247, 2687531, 18812717]

約数ペア:

[(1, 18812717), (7, 2687531), (11, 1710247), (19, 990143), (49, 383933), (77, 244321), (121, 155477), (133, 141449), (167, 112651), (209, 90013), (539, 34903), (847, 22211), (931, 20207), (1169, 16093), (1463, 12859), (1837, 10241), (2299, 8183), (3173, 5929)]