20564459721

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{683909}}^1$

素因数の和:684185

約数の個数: 24

約数和(自身を含む): 32113677960

約数和(自身を除く): 11549218239

約数列:

[1, 3, 9, 13, 39, 117, 257, 771, 2313, 3341, 10023, 30069, 683909, 2051727, 6155181, 8890817, 26672451, 80017353, 175764613, 527293839, 1581881517, 2284939969, 6854819907, 20564459721]

約数ペア:

[(1, 20564459721), (3, 6854819907), (9, 2284939969), (13, 1581881517), (39, 527293839), (117, 175764613), (257, 80017353), (771, 26672451), (2313, 8890817), (3341, 6155181), (10023, 2051727), (30069, 683909)]