20417890

素因数分解:

$2^1\times 5^1\times {\mathrm{439}}^1\times {\mathrm{4651}}^1$

素因数の和:5097

約数の個数: 16

約数和(自身を含む): 36843840

約数和(自身を除く): 16425950

約数列:

[1, 2, 5, 10, 439, 878, 2195, 4390, 4651, 9302, 23255, 46510, 2041789, 4083578, 10208945, 20417890]

約数ペア:

[(1, 20417890), (2, 10208945), (5, 4083578), (10, 2041789), (439, 46510), (878, 23255), (2195, 9302), (4390, 4651)]