20906290

素因数分解:

$2^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{15959}}^1$

素因数の和:16097

約数の個数: 16

約数和(自身を含む): 37920960

約数和(自身を除く): 17014670

約数列:

[1, 2, 5, 10, 131, 262, 655, 1310, 15959, 31918, 79795, 159590, 2090629, 4181258, 10453145, 20906290]

約数ペア:

[(1, 20906290), (2, 10453145), (5, 4181258), (10, 2090629), (131, 159590), (262, 79795), (655, 31918), (1310, 15959)]