18720296

素因数分解:

$2^3\times 7^1\times {\mathrm{353}}^1\times {\mathrm{947}}^1$

素因数の和:1313

約数の個数: 32

約数和(自身を含む): 40271040

約数和(自身を除く): 21550744

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 353, 706, 947, 1412, 1894, 2471, 2824, 3788, 4942, 6629, 7576, 9884, 13258, 19768, 26516, 53032, 334291, 668582, 1337164, 2340037, 2674328, 4680074, 9360148, 18720296]

約数ペア:

[(1, 18720296), (2, 9360148), (4, 4680074), (7, 2674328), (8, 2340037), (14, 1337164), (28, 668582), (56, 334291), (353, 53032), (706, 26516), (947, 19768), (1412, 13258), (1894, 9884), (2471, 7576), (2824, 6629), (3788, 4942)]