31081239

素因数分解:

$3^4\times 7^2\times {\mathrm{41}}^1\times {\mathrm{191}}^1$

素因数の和:258

約数の個数: 60

約数和(自身を含む): 55617408

約数和(自身を除く): 24536169

約数列:

[1, 3, 7, 9, 21, 27, 41, 49, 63, 81, 123, 147, 189, 191, 287, 369, 441, 567, 573, 861, 1107, 1323, 1337, 1719, 2009, 2583, 3321, 3969, 4011, 5157, 6027, 7749, 7831, 9359, 12033, 15471, 18081, 23247, 23493, 28077, 36099, 54243, 54817, 70479, 84231, 108297, 162729, 164451, 211437, 252693, 383719, 493353, 634311, 758079, 1151157, 1480059, 3453471, 4440177, 10360413, 31081239]

約数ペア:

[(1, 31081239), (3, 10360413), (7, 4440177), (9, 3453471), (21, 1480059), (27, 1151157), (41, 758079), (49, 634311), (63, 493353), (81, 383719), (123, 252693), (147, 211437), (189, 164451), (191, 162729), (287, 108297), (369, 84231), (441, 70479), (567, 54817), (573, 54243), (861, 36099), (1107, 28077), (1323, 23493), (1337, 23247), (1719, 18081), (2009, 15471), (2583, 12033), (3321, 9359), (3969, 7831), (4011, 7749), (5157, 6027)]