18859309

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{1523}}^1$

素因数の和:1620

約数の個数: 16

約数和(自身を含む): 22677120

約数和(自身を除く): 3817811

約数列:

[1, 7, 29, 61, 203, 427, 1523, 1769, 10661, 12383, 44167, 92903, 309169, 650321, 2694187, 18859309]

約数ペア:

[(1, 18859309), (7, 2694187), (29, 650321), (61, 309169), (203, 92903), (427, 44167), (1523, 12383), (1769, 10661)]