20491471

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{1861}}^1$

素因数の和:1903

約数の個数: 24

約数和(自身を含む): 27736352

約数和(自身を除く): 7244881

約数列:

[1, 7, 11, 13, 77, 91, 121, 143, 847, 1001, 1573, 1861, 11011, 13027, 20471, 24193, 143297, 169351, 225181, 266123, 1576267, 1862861, 2927353, 20491471]

約数ペア:

[(1, 20491471), (7, 2927353), (11, 1862861), (13, 1576267), (77, 266123), (91, 225181), (121, 169351), (143, 143297), (847, 24193), (1001, 20471), (1573, 13027), (1861, 11011)]