18421587

素因数分解:

$3^5\times {\mathrm{41}}^1\times {\mathrm{43}}^2$

素因数の和:142

約数の個数: 36

約数和(自身を含む): 28940184

約数和(自身を除く): 10518597

約数列:

[1, 3, 9, 27, 41, 43, 81, 123, 129, 243, 369, 387, 1107, 1161, 1763, 1849, 3321, 3483, 5289, 5547, 9963, 10449, 15867, 16641, 47601, 49923, 75809, 142803, 149769, 227427, 428409, 449307, 682281, 2046843, 6140529, 18421587]

約数ペア:

[(1, 18421587), (3, 6140529), (9, 2046843), (27, 682281), (41, 449307), (43, 428409), (81, 227427), (123, 149769), (129, 142803), (243, 75809), (369, 49923), (387, 47601), (1107, 16641), (1161, 15867), (1763, 10449), (1849, 9963), (3321, 5547), (3483, 5289)]