20151985

素因数分解:

$5^1\times 7^2\times {\mathrm{83}}^1\times {\mathrm{991}}^1$

素因数の和:1093

約数の個数: 24

約数和(自身を含む): 28498176

約数和(自身を除く): 8346191

約数列:

[1, 5, 7, 35, 49, 83, 245, 415, 581, 991, 2905, 4067, 4955, 6937, 20335, 34685, 48559, 82253, 242795, 411265, 575771, 2878855, 4030397, 20151985]

約数ペア:

[(1, 20151985), (5, 4030397), (7, 2878855), (35, 575771), (49, 411265), (83, 242795), (245, 82253), (415, 48559), (581, 34685), (991, 20335), (2905, 6937), (4067, 4955)]