21178276

素因数分解:

$2^2\times 7^1\times {\mathrm{193}}^1\times {\mathrm{3919}}^1$

素因数の和:4123

約数の個数: 24

約数和(自身を含む): 42586880

約数和(自身を除く): 21408604

約数列:

[1, 2, 4, 7, 14, 28, 193, 386, 772, 1351, 2702, 3919, 5404, 7838, 15676, 27433, 54866, 109732, 756367, 1512734, 3025468, 5294569, 10589138, 21178276]

約数ペア:

[(1, 21178276), (2, 10589138), (4, 5294569), (7, 3025468), (14, 1512734), (28, 756367), (193, 109732), (386, 54866), (772, 27433), (1351, 15676), (2702, 7838), (3919, 5404)]