891902011

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{81001}}^1$

素因数の和:81043

約数の個数: 24

約数和(自身を含む): 1206605792

約数和(自身を除く): 314703781

約数列:

[1, 7, 11, 13, 77, 91, 121, 143, 847, 1001, 1573, 11011, 81001, 567007, 891011, 1053013, 6237077, 7371091, 9801121, 11583143, 68607847, 81082001, 127414573, 891902011]

約数ペア:

[(1, 891902011), (7, 127414573), (11, 81082001), (13, 68607847), (77, 11583143), (91, 9801121), (121, 7371091), (143, 6237077), (847, 1053013), (1001, 891011), (1573, 567007), (11011, 81001)]