12961389

素因数分解:

$3^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{2459}}^1$

素因数の和:2720

約数の個数: 16

約数和(自身を含む): 19837440

約数和(自身を除く): 6876051

約数列:

[1, 3, 7, 21, 251, 753, 1757, 2459, 5271, 7377, 17213, 51639, 617209, 1851627, 4320463, 12961389]

約数ペア:

[(1, 12961389), (3, 4320463), (7, 1851627), (21, 617209), (251, 51639), (753, 17213), (1757, 7377), (2459, 5271)]