21090969208

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{61310957}}^1$

素因数の和:61311006

約数の個数: 16

約数和(自身を含む): 40465232280

約数和(自身を除く): 19374263072

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 61310957, 122621914, 245243828, 490487656, 2636371151, 5272742302, 10545484604, 21090969208]

約数ペア:

[(1, 21090969208), (2, 10545484604), (4, 5272742302), (8, 2636371151), (43, 490487656), (86, 245243828), (172, 122621914), (344, 61310957)]