19806721981

素因数分解:

${\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{137}}^1\times {\mathrm{64919}}^1$

素因数の和:65204

約数の個数: 16

約数和(自身を含む): 21286488960

約数和(自身を除く): 1479766979

約数列:

[1, 17, 131, 137, 2227, 2329, 17947, 64919, 305099, 1103623, 8504389, 8893903, 144574613, 151196351, 1165101293, 19806721981]

約数ペア:

[(1, 19806721981), (17, 1165101293), (131, 151196351), (137, 144574613), (2227, 8893903), (2329, 8504389), (17947, 1103623), (64919, 305099)]