81220555

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{277}}^1\times {\mathrm{347}}^1$

素因数の和:655

約数の個数: 24

約数和(自身を含む): 106224912

約数和(自身を除く): 25004357

約数列:

[1, 5, 13, 65, 169, 277, 347, 845, 1385, 1735, 3601, 4511, 18005, 22555, 46813, 58643, 96119, 234065, 293215, 480595, 1249547, 6247735, 16244111, 81220555]

約数ペア:

[(1, 81220555), (5, 16244111), (13, 6247735), (65, 1249547), (169, 480595), (277, 293215), (347, 234065), (845, 96119), (1385, 58643), (1735, 46813), (3601, 22555), (4511, 18005)]