21781352

素因数分解:

$2^3\times {\mathrm{17}}^2\times {\mathrm{9421}}^1$

素因数の和:9461

約数の個数: 24

約数和(自身を含む): 43388310

約数和(自身を除く): 21606958

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 289, 578, 1156, 2312, 9421, 18842, 37684, 75368, 160157, 320314, 640628, 1281256, 2722669, 5445338, 10890676, 21781352]

約数ペア:

[(1, 21781352), (2, 10890676), (4, 5445338), (8, 2722669), (17, 1281256), (34, 640628), (68, 320314), (136, 160157), (289, 75368), (578, 37684), (1156, 18842), (2312, 9421)]