81040743

素因数分解:

$3^6\times 7^1\times {\mathrm{15881}}^1$

素因数の和:15906

約数の個数: 28

約数和(自身を含む): 138872208

約数和(自身を除く): 57831465

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 729, 1701, 5103, 15881, 47643, 111167, 142929, 333501, 428787, 1000503, 1286361, 3001509, 3859083, 9004527, 11577249, 27013581, 81040743]

約数ペア:

[(1, 81040743), (3, 27013581), (7, 11577249), (9, 9004527), (21, 3859083), (27, 3001509), (63, 1286361), (81, 1000503), (189, 428787), (243, 333501), (567, 142929), (729, 111167), (1701, 47643), (5103, 15881)]