18965247

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{22027}}^1$

素因数の和:22078

約数の個数: 16

約数和(自身を含む): 29605632

約数和(自身を除く): 10640385

約数列:

[1, 3, 7, 21, 41, 123, 287, 861, 22027, 66081, 154189, 462567, 903107, 2709321, 6321749, 18965247]

約数ペア:

[(1, 18965247), (3, 6321749), (7, 2709321), (21, 903107), (41, 462567), (123, 154189), (287, 66081), (861, 22027)]