21171007

素因数分解:

${\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{313}}^1$

素因数の和:391

約数の個数: 24

約数和(自身を含む): 25725392

約数和(自身を除く): 4554385

約数列:

[1, 11, 13, 43, 121, 143, 313, 473, 559, 1573, 3443, 4069, 5203, 6149, 13459, 37873, 44759, 67639, 148049, 174967, 492349, 1628539, 1924637, 21171007]

約数ペア:

[(1, 21171007), (11, 1924637), (13, 1628539), (43, 492349), (121, 174967), (143, 148049), (313, 67639), (473, 44759), (559, 37873), (1573, 13459), (3443, 6149), (4069, 5203)]