81285155

素因数分解:

$5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{11789}}^1$

素因数の和:11998

約数の個数: 16

約数和(自身を含む): 112052160

約数和(自身を除く): 30767005

約数列:

[1, 5, 7, 35, 197, 985, 1379, 6895, 11789, 58945, 82523, 412615, 2322433, 11612165, 16257031, 81285155]

約数ペア:

[(1, 81285155), (5, 16257031), (7, 11612165), (35, 2322433), (197, 412615), (985, 82523), (1379, 58945), (6895, 11789)]