12825640

素因数分解:

$2^3\times 5^1\times {\mathrm{311}}^1\times {\mathrm{1031}}^1$

素因数の和:1353

約数の個数: 32

約数和(自身を含む): 28978560

約数和(自身を除く): 16152920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311, 622, 1031, 1244, 1555, 2062, 2488, 3110, 4124, 5155, 6220, 8248, 10310, 12440, 20620, 41240, 320641, 641282, 1282564, 1603205, 2565128, 3206410, 6412820, 12825640]

約数ペア:

[(1, 12825640), (2, 6412820), (4, 3206410), (5, 2565128), (8, 1603205), (10, 1282564), (20, 641282), (40, 320641), (311, 41240), (622, 20620), (1031, 12440), (1244, 10310), (1555, 8248), (2062, 6220), (2488, 5155), (3110, 4124)]