81407557

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1069}}^1$

素因数の和:1153

約数の個数: 32

約数和(自身を含む): 108472320

約数和(自身を除く): 27064763

約数列:

[1, 7, 11, 23, 43, 77, 161, 253, 301, 473, 989, 1069, 1771, 3311, 6923, 7483, 10879, 11759, 24587, 45967, 76153, 82313, 172109, 270457, 321769, 505637, 1057241, 1893199, 3539459, 7400687, 11629651, 81407557]

約数ペア:

[(1, 81407557), (7, 11629651), (11, 7400687), (23, 3539459), (43, 1893199), (77, 1057241), (161, 505637), (253, 321769), (301, 270457), (473, 172109), (989, 82313), (1069, 76153), (1771, 45967), (3311, 24587), (6923, 11759), (7483, 10879)]