419800

素因数分解:

$2^3\times 5^2\times {\mathrm{2099}}^1$

素因数の和:2115

約数の個数: 24

約数和(自身を含む): 976500

約数和(自身を除く): 556700

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 2099, 4198, 8396, 10495, 16792, 20990, 41980, 52475, 83960, 104950, 209900, 419800]

約数ペア:

[(1, 419800), (2, 209900), (4, 104950), (5, 83960), (8, 52475), (10, 41980), (20, 20990), (25, 16792), (40, 10495), (50, 8396), (100, 4198), (200, 2099)]