18866887

素因数分解:

${\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1\times {\mathrm{197}}^1$

素因数の和:402

約数の個数: 16

約数和(自身を含む): 20956320

約数和(自身を除く): 2089433

約数列:

[1, 13, 53, 139, 197, 689, 1807, 2561, 7367, 10441, 27383, 95771, 135733, 355979, 1451299, 18866887]

約数ペア:

[(1, 18866887), (13, 1451299), (53, 355979), (139, 135733), (197, 95771), (689, 27383), (1807, 10441), (2561, 7367)]