99800

素因数分解:

$2^3\times 5^2\times {\mathrm{499}}^1$

素因数の和:515

約数の個数: 24

約数和(自身を含む): 232500

約数和(自身を除く): 132700

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 499, 998, 1996, 2495, 3992, 4990, 9980, 12475, 19960, 24950, 49900, 99800]

約数ペア:

[(1, 99800), (2, 49900), (4, 24950), (5, 19960), (8, 12475), (10, 9980), (20, 4990), (25, 3992), (40, 2495), (50, 1996), (100, 998), (200, 499)]