19999568

素因数分解:

$2^4\times {\mathrm{353}}^1\times {\mathrm{3541}}^1$

素因数の和:3902

約数の個数: 20

約数和(自身を含む): 38869908

約数和(自身を除く): 18870340

約数列:

[1, 2, 4, 8, 16, 353, 706, 1412, 2824, 3541, 5648, 7082, 14164, 28328, 56656, 1249973, 2499946, 4999892, 9999784, 19999568]

約数ペア:

[(1, 19999568), (2, 9999784), (4, 4999892), (8, 2499946), (16, 1249973), (353, 56656), (706, 28328), (1412, 14164), (2824, 7082), (3541, 5648)]