21968155

素因数分解:

$5^1\times {\mathrm{11}}^3\times {\mathrm{3301}}^1$

素因数の和:3339

約数の個数: 16

約数和(自身を含む): 29004768

約数和(自身を除く): 7036613

約数列:

[1, 5, 11, 55, 121, 605, 1331, 3301, 6655, 16505, 36311, 181555, 399421, 1997105, 4393631, 21968155]

約数ペア:

[(1, 21968155), (5, 4393631), (11, 1997105), (55, 399421), (121, 181555), (605, 36311), (1331, 16505), (3301, 6655)]