20739381

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{7937}}^1$

素因数の和:8020

約数の個数: 16

約数和(自身を含む): 30227904

約数和(自身を除く): 9488523

約数列:

[1, 3, 13, 39, 67, 201, 871, 2613, 7937, 23811, 103181, 309543, 531779, 1595337, 6913127, 20739381]

約数ペア:

[(1, 20739381), (3, 6913127), (13, 1595337), (39, 531779), (67, 309543), (201, 103181), (871, 23811), (2613, 7937)]