20651645

素因数分解:

$5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{7109}}^1$

素因数の和:7204

約数の個数: 16

約数和(自身を含む): 28667520

約数和(自身を除く): 8015875

約数列:

[1, 5, 7, 35, 83, 415, 581, 2905, 7109, 35545, 49763, 248815, 590047, 2950235, 4130329, 20651645]

約数ペア:

[(1, 20651645), (5, 4130329), (7, 2950235), (35, 590047), (83, 248815), (415, 49763), (581, 35545), (2905, 7109)]