81210808

素因数分解:

$2^3\times 7^1\times {\mathrm{311}}^1\times {\mathrm{4663}}^1$

素因数の和:4987

約数の個数: 32

約数和(自身を含む): 174620160

約数和(自身を除く): 93409352

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 311, 622, 1244, 2177, 2488, 4354, 4663, 8708, 9326, 17416, 18652, 32641, 37304, 65282, 130564, 261128, 1450193, 2900386, 5800772, 10151351, 11601544, 20302702, 40605404, 81210808]

約数ペア:

[(1, 81210808), (2, 40605404), (4, 20302702), (7, 11601544), (8, 10151351), (14, 5800772), (28, 2900386), (56, 1450193), (311, 261128), (622, 130564), (1244, 65282), (2177, 37304), (2488, 32641), (4354, 18652), (4663, 17416), (8708, 9326)]