19991133

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{193}}^1\times {\mathrm{677}}^1$

素因数の和:893

約数の個数: 24

約数和(自身を含む): 30778488

約数和(自身を除く): 10787355

約数列:

[1, 3, 9, 17, 51, 153, 193, 579, 677, 1737, 2031, 3281, 6093, 9843, 11509, 29529, 34527, 103581, 130661, 391983, 1175949, 2221237, 6663711, 19991133]

約数ペア:

[(1, 19991133), (3, 6663711), (9, 2221237), (17, 1175949), (51, 391983), (153, 130661), (193, 103581), (579, 34527), (677, 29529), (1737, 11509), (2031, 9843), (3281, 6093)]