19986065

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{8863}}^1$

素因数の和:8920

約数の個数: 16

約数和(自身を含む): 26804736

約数和(自身を除く): 6818671

約数列:

[1, 5, 11, 41, 55, 205, 451, 2255, 8863, 44315, 97493, 363383, 487465, 1816915, 3997213, 19986065]

約数ペア:

[(1, 19986065), (5, 3997213), (11, 1816915), (41, 487465), (55, 363383), (205, 97493), (451, 44315), (2255, 8863)]