19992040

素因数分解:

$2^3\times 5^1\times {\mathrm{499801}}^1$

素因数の和:499812

約数の個数: 16

約数和(自身を含む): 44982180

約数和(自身を除く): 24990140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 499801, 999602, 1999204, 2499005, 3998408, 4998010, 9996020, 19992040]

約数ペア:

[(1, 19992040), (2, 9996020), (4, 4998010), (5, 3998408), (8, 2499005), (10, 1999204), (20, 999602), (40, 499801)]