19992990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{666433}}^1$

素因数の和:666443

約数の個数: 16

約数和(自身を含む): 47983248

約数和(自身を除く): 27990258

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 666433, 1332866, 1999299, 3332165, 3998598, 6664330, 9996495, 19992990]

約数ペア:

[(1, 19992990), (2, 9996495), (3, 6664330), (5, 3998598), (6, 3332165), (10, 1999299), (15, 1332866), (30, 666433)]