18997381

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{1283}}^1$

素因数の和:1380

約数の個数: 16

約数和(自身を含む): 22002624

約数和(自身を除く): 3005243

約数列:

[1, 13, 17, 67, 221, 871, 1139, 1283, 14807, 16679, 21811, 85961, 283543, 1117493, 1461337, 18997381]

約数ペア:

[(1, 18997381), (13, 1461337), (17, 1117493), (67, 283543), (221, 85961), (871, 21811), (1139, 16679), (1283, 14807)]