19906799

素因数分解:

${\mathrm{11}}^2\times {\mathrm{23}}^2\times {\mathrm{311}}^1$

素因数の和:379

約数の個数: 18

約数和(自身を含む): 22947288

約数和(自身を除く): 3040489

約数列:

[1, 11, 23, 121, 253, 311, 529, 2783, 3421, 5819, 7153, 37631, 64009, 78683, 164519, 865513, 1809709, 19906799]

約数ペア:

[(1, 19906799), (11, 1809709), (23, 865513), (121, 164519), (253, 78683), (311, 64009), (529, 37631), (2783, 7153), (3421, 5819)]