81352593

素因数分解:

$3^4\times 7^2\times {\mathrm{103}}^1\times {\mathrm{199}}^1$

素因数の和:328

約数の個数: 60

約数和(自身を含む): 143457600

約数和(自身を除く): 62105007

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 103, 147, 189, 199, 309, 441, 567, 597, 721, 927, 1323, 1393, 1791, 2163, 2781, 3969, 4179, 5047, 5373, 6489, 8343, 9751, 12537, 15141, 16119, 19467, 20497, 29253, 37611, 45423, 58401, 61491, 87759, 112833, 136269, 143479, 184473, 263277, 408807, 430437, 553419, 789831, 1004353, 1291311, 1660257, 3013059, 3873933, 9039177, 11621799, 27117531, 81352593]

約数ペア:

[(1, 81352593), (3, 27117531), (7, 11621799), (9, 9039177), (21, 3873933), (27, 3013059), (49, 1660257), (63, 1291311), (81, 1004353), (103, 789831), (147, 553419), (189, 430437), (199, 408807), (309, 263277), (441, 184473), (567, 143479), (597, 136269), (721, 112833), (927, 87759), (1323, 61491), (1393, 58401), (1791, 45423), (2163, 37611), (2781, 29253), (3969, 20497), (4179, 19467), (5047, 16119), (5373, 15141), (6489, 12537), (8343, 9751)]