239211505

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{216481}}^1$

素因数の和:216516

約数の個数: 16

約数和(自身を含む): 327320784

約数和(自身を除く): 88109279

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 216481, 1082405, 2814253, 3680177, 14071265, 18400885, 47842301, 239211505]

約数ペア:

[(1, 239211505), (5, 47842301), (13, 18400885), (17, 14071265), (65, 3680177), (85, 2814253), (221, 1082405), (1105, 216481)]