20646955

素因数分解:

$5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{8081}}^1$

素因数の和:8166

約数の個数: 16

約数和(自身を含む): 28707264

約数和(自身を除く): 8060309

約数列:

[1, 5, 7, 35, 73, 365, 511, 2555, 8081, 40405, 56567, 282835, 589913, 2949565, 4129391, 20646955]

約数ペア:

[(1, 20646955), (5, 4129391), (7, 2949565), (35, 589913), (73, 282835), (365, 56567), (511, 40405), (2555, 8081)]