99998000

素因数分解:

$2^4\times 5^3\times {\mathrm{49999}}^1$

素因数の和:50022

約数の個数: 40

約数和(自身を含む): 241800000

約数和(自身を除く): 141802000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 49999, 99998, 199996, 249995, 399992, 499990, 799984, 999980, 1249975, 1999960, 2499950, 3999920, 4999900, 6249875, 9999800, 12499750, 19999600, 24999500, 49999000, 99998000]

約数ペア:

[(1, 99998000), (2, 49999000), (4, 24999500), (5, 19999600), (8, 12499750), (10, 9999800), (16, 6249875), (20, 4999900), (25, 3999920), (40, 2499950), (50, 1999960), (80, 1249975), (100, 999980), (125, 799984), (200, 499990), (250, 399992), (400, 249995), (500, 199996), (1000, 99998), (2000, 49999)]