20728808

素因数分解:

$2^3\times {\mathrm{281}}^1\times {\mathrm{9221}}^1$

素因数の和:9508

約数の個数: 16

約数和(自身を含む): 39009060

約数和(自身を除く): 18280252

約数列:

[1, 2, 4, 8, 281, 562, 1124, 2248, 9221, 18442, 36884, 73768, 2591101, 5182202, 10364404, 20728808]

約数ペア:

[(1, 20728808), (2, 10364404), (4, 5182202), (8, 2591101), (281, 73768), (562, 36884), (1124, 18442), (2248, 9221)]