19989807

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{2861}}^1$

素因数の和:3018

約数の個数: 16

約数和(自身を含む): 28436832

約数和(自身を除く): 8447025

約数列:

[1, 3, 17, 51, 137, 411, 2329, 2861, 6987, 8583, 48637, 145911, 391957, 1175871, 6663269, 19989807]

約数ペア:

[(1, 19989807), (3, 6663269), (17, 1175871), (51, 391957), (137, 145911), (411, 48637), (2329, 8583), (2861, 6987)]