18738447

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{68639}}^1$

素因数の和:68662

約数の個数: 16

約数和(自身を含む): 30750720

約数和(自身を除く): 12012273

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 68639, 205917, 480473, 892307, 1441419, 2676921, 6246149, 18738447]

約数ペア:

[(1, 18738447), (3, 6246149), (7, 2676921), (13, 1441419), (21, 892307), (39, 480473), (91, 205917), (273, 68639)]