18810519

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{68903}}^1$

素因数の和:68926

約数の個数: 16

約数和(自身を含む): 30868992

約数和(自身を除く): 12058473

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 68903, 206709, 482321, 895739, 1446963, 2687217, 6270173, 18810519]

約数ペア:

[(1, 18810519), (3, 6270173), (7, 2687217), (13, 1446963), (21, 895739), (39, 482321), (91, 206709), (273, 68903)]