20920165

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{20611}}^1$

素因数の和:20652

約数の個数: 16

約数和(自身を含む): 29681280

約数和(自身を除く): 8761115

約数列:

[1, 5, 7, 29, 35, 145, 203, 1015, 20611, 103055, 144277, 597719, 721385, 2988595, 4184033, 20920165]

約数ペア:

[(1, 20920165), (5, 4184033), (7, 2988595), (29, 721385), (35, 597719), (145, 144277), (203, 103055), (1015, 20611)]