19978610

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{18329}}^1$

素因数の和:18445

約数の個数: 16

約数和(自身を含む): 36293400

約数和(自身を除く): 16314790

約数列:

[1, 2, 5, 10, 109, 218, 545, 1090, 18329, 36658, 91645, 183290, 1997861, 3995722, 9989305, 19978610]

約数ペア:

[(1, 19978610), (2, 9989305), (5, 3995722), (10, 1997861), (109, 183290), (218, 91645), (545, 36658), (1090, 18329)]