19990312

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{108643}}^1$

素因数の和:108672

約数の個数: 16

約数和(自身を含む): 39111840

約数和(自身を除く): 19121528

約数列:

[1, 2, 4, 8, 23, 46, 92, 184, 108643, 217286, 434572, 869144, 2498789, 4997578, 9995156, 19990312]

約数ペア:

[(1, 19990312), (2, 9995156), (4, 4997578), (8, 2498789), (23, 869144), (46, 434572), (92, 217286), (184, 108643)]