20641159

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{4001}}^1$

素因数の和:4086

約数の個数: 16

約数和(自身を含む): 26125056

約数和(自身を除く): 5483897

約数列:

[1, 7, 11, 67, 77, 469, 737, 4001, 5159, 28007, 44011, 268067, 308077, 1876469, 2948737, 20641159]

約数ペア:

[(1, 20641159), (7, 2948737), (11, 1876469), (67, 308077), (77, 268067), (469, 44011), (737, 28007), (4001, 5159)]