20813768

素因数分解:

$2^3\times {\mathrm{109}}^1\times {\mathrm{23869}}^1$

素因数の和:23984

約数の個数: 16

約数和(自身を含む): 39385500

約数和(自身を除く): 18571732

約数列:

[1, 2, 4, 8, 109, 218, 436, 872, 23869, 47738, 95476, 190952, 2601721, 5203442, 10406884, 20813768]

約数ペア:

[(1, 20813768), (2, 10406884), (4, 5203442), (8, 2601721), (109, 190952), (218, 95476), (436, 47738), (872, 23869)]