21182553

素因数分解:

$3^6\times 7^2\times {\mathrm{593}}^1$

素因数の和:625

約数の個数: 42

約数和(自身を含む): 37006794

約数和(自身を除く): 15824241

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 243, 441, 567, 593, 729, 1323, 1701, 1779, 3969, 4151, 5103, 5337, 11907, 12453, 16011, 29057, 35721, 37359, 48033, 87171, 112077, 144099, 261513, 336231, 432297, 784539, 1008693, 2353617, 3026079, 7060851, 21182553]

約数ペア:

[(1, 21182553), (3, 7060851), (7, 3026079), (9, 2353617), (21, 1008693), (27, 784539), (49, 432297), (63, 336231), (81, 261513), (147, 144099), (189, 112077), (243, 87171), (441, 48033), (567, 37359), (593, 35721), (729, 29057), (1323, 16011), (1701, 12453), (1779, 11907), (3969, 5337), (4151, 5103)]