18197543

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{643}}^1$

素因数の和:974

約数の個数: 16

約数和(自身を含む): 22503936

約数和(自身を除く): 4306393

約数列:

[1, 7, 13, 91, 311, 643, 2177, 4043, 4501, 8359, 28301, 58513, 199973, 1399811, 2599649, 18197543]

約数ペア:

[(1, 18197543), (7, 2599649), (13, 1399811), (91, 199973), (311, 58513), (643, 28301), (2177, 8359), (4043, 4501)]