19968081

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{55933}}^1$

素因数の和:55960

約数の個数: 16

約数和(自身を含む): 32217984

約数和(自身を除く): 12249903

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 55933, 167799, 391531, 950861, 1174593, 2852583, 6656027, 19968081]

約数ペア:

[(1, 19968081), (3, 6656027), (7, 2852583), (17, 1174593), (21, 950861), (51, 391531), (119, 167799), (357, 55933)]