81167961

素因数分解:

$3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{12841}}^1$

素因数の和:12901

約数の個数: 24

約数和(自身を含む): 128830944

約数和(自身を除く): 47662983

約数列:

[1, 3, 7, 21, 43, 49, 129, 147, 301, 903, 2107, 6321, 12841, 38523, 89887, 269661, 552163, 629209, 1656489, 1887627, 3865141, 11595423, 27055987, 81167961]

約数ペア:

[(1, 81167961), (3, 27055987), (7, 11595423), (21, 3865141), (43, 1887627), (49, 1656489), (129, 629209), (147, 552163), (301, 269661), (903, 89887), (2107, 38523), (6321, 12841)]