20687816

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{60139}}^1$

素因数の和:60188

約数の個数: 16

約数和(自身を含む): 39692400

約数和(自身を除く): 19004584

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 60139, 120278, 240556, 481112, 2585977, 5171954, 10343908, 20687816]

約数ペア:

[(1, 20687816), (2, 10343908), (4, 5171954), (8, 2585977), (43, 481112), (86, 240556), (172, 120278), (344, 60139)]