18987147

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{193}}^1\times {\mathrm{643}}^1$

素因数の和:859

約数の個数: 24

約数和(自身を含む): 29235024

約数和(自身を除く): 10247877

約数列:

[1, 3, 9, 17, 51, 153, 193, 579, 643, 1737, 1929, 3281, 5787, 9843, 10931, 29529, 32793, 98379, 124099, 372297, 1116891, 2109683, 6329049, 18987147]

約数ペア:

[(1, 18987147), (3, 6329049), (9, 2109683), (17, 1116891), (51, 372297), (153, 124099), (193, 98379), (579, 32793), (643, 29529), (1737, 10931), (1929, 9843), (3281, 5787)]