409456

素因数分解:

$2^4\times {\mathrm{157}}^1\times {\mathrm{163}}^1$

素因数の和:328

約数の個数: 20

約数和(自身を含む): 803272

約数和(自身を除く): 393816

約数列:

[1, 2, 4, 8, 16, 157, 163, 314, 326, 628, 652, 1256, 1304, 2512, 2608, 25591, 51182, 102364, 204728, 409456]

約数ペア:

[(1, 409456), (2, 204728), (4, 102364), (8, 51182), (16, 25591), (157, 2608), (163, 2512), (314, 1304), (326, 1256), (628, 652)]