20156312

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{1151}}^1$

素因数の和:1367

約数の個数: 32

約数和(自身を含む): 41472000

約数和(自身を除く): 21315688

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 199, 398, 796, 1151, 1592, 2189, 2302, 4378, 4604, 8756, 9208, 12661, 17512, 25322, 50644, 101288, 229049, 458098, 916196, 1832392, 2519539, 5039078, 10078156, 20156312]

約数ペア:

[(1, 20156312), (2, 10078156), (4, 5039078), (8, 2519539), (11, 1832392), (22, 916196), (44, 458098), (88, 229049), (199, 101288), (398, 50644), (796, 25322), (1151, 17512), (1592, 12661), (2189, 9208), (2302, 8756), (4378, 4604)]