19405680844

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{643}}^1\times {\mathrm{685907}}^1$

素因数の和:686565

約数の個数: 24

約数和(自身を含む): 37104879168

約数和(自身を除く): 17699198324

約数列:

[1, 2, 4, 11, 22, 44, 643, 1286, 2572, 7073, 14146, 28292, 685907, 1371814, 2743628, 7544977, 15089954, 30179908, 441038201, 882076402, 1764152804, 4851420211, 9702840422, 19405680844]

約数ペア:

[(1, 19405680844), (2, 9702840422), (4, 4851420211), (11, 1764152804), (22, 882076402), (44, 441038201), (643, 30179908), (1286, 15089954), (2572, 7544977), (7073, 2743628), (14146, 1371814), (28292, 685907)]