9999800

素因数分解:

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

素因数の和:50015

約数の個数: 24

約数和(自身を含む): 23250000

約数和(自身を除く): 13250200

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 49999, 99998, 199996, 249995, 399992, 499990, 999980, 1249975, 1999960, 2499950, 4999900, 9999800]

約数ペア:

[(1, 9999800), (2, 4999900), (4, 2499950), (5, 1999960), (8, 1249975), (10, 999980), (20, 499990), (25, 399992), (40, 249995), (50, 199996), (100, 99998), (200, 49999)]