81172385

素因数分解:

$5^1\times 7^1\times {\mathrm{431}}^1\times {\mathrm{5381}}^1$

素因数の和:5824

約数の個数: 16

約数和(自身を含む): 111601152

約数和(自身を除く): 30428767

約数列:

[1, 5, 7, 35, 431, 2155, 3017, 5381, 15085, 26905, 37667, 188335, 2319211, 11596055, 16234477, 81172385]

約数ペア:

[(1, 81172385), (5, 16234477), (7, 11596055), (35, 2319211), (431, 188335), (2155, 37667), (3017, 26905), (5381, 15085)]