19964728

素因数分解:

$2^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{8291}}^1$

素因数の和:8347

約数の個数: 32

約数和(自身を含む): 43781760

約数和(自身を除く): 23817032

約数列:

[1, 2, 4, 7, 8, 14, 28, 43, 56, 86, 172, 301, 344, 602, 1204, 2408, 8291, 16582, 33164, 58037, 66328, 116074, 232148, 356513, 464296, 713026, 1426052, 2495591, 2852104, 4991182, 9982364, 19964728]

約数ペア:

[(1, 19964728), (2, 9982364), (4, 4991182), (7, 2852104), (8, 2495591), (14, 1426052), (28, 713026), (43, 464296), (56, 356513), (86, 232148), (172, 116074), (301, 66328), (344, 58037), (602, 33164), (1204, 16582), (2408, 8291)]