2009887945

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{997463}}^1$

素因数の和:997512

約数の個数: 16

約数和(自身を含む): 2681183232

約数和(自身を除く): 671295287

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 997463, 4987315, 12967019, 30921353, 64835095, 154606765, 401977589, 2009887945]

約数ペア:

[(1, 2009887945), (5, 401977589), (13, 154606765), (31, 64835095), (65, 30921353), (155, 12967019), (403, 4987315), (2015, 997463)]