18887105

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{821}}^1$

素因数の和:976

約数の個数: 16

約数和(自身を含む): 23436864

約数和(自身を除く): 4549759

約数列:

[1, 5, 43, 107, 215, 535, 821, 4105, 4601, 23005, 35303, 87847, 176515, 439235, 3777421, 18887105]

約数ペア:

[(1, 18887105), (5, 3777421), (43, 439235), (107, 176515), (215, 87847), (535, 35303), (821, 23005), (4105, 4601)]