20687555

素因数分解:

$5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{4967}}^1$

素因数の和:5003

約数の個数: 24

約数和(自身を含む): 30583008

約数和(自身を除く): 9895453

約数列:

[1, 5, 7, 17, 35, 49, 85, 119, 245, 595, 833, 4165, 4967, 24835, 34769, 84439, 173845, 243383, 422195, 591073, 1216915, 2955365, 4137511, 20687555]

約数ペア:

[(1, 20687555), (5, 4137511), (7, 2955365), (17, 1216915), (35, 591073), (49, 422195), (85, 243383), (119, 173845), (245, 84439), (595, 34769), (833, 24835), (4165, 4967)]