199400

素因数分解:

$2^3\times 5^2\times {\mathrm{997}}^1$

素因数の和:1013

約数の個数: 24

約数和(自身を含む): 464070

約数和(自身を除く): 264670

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 997, 1994, 3988, 4985, 7976, 9970, 19940, 24925, 39880, 49850, 99700, 199400]

約数ペア:

[(1, 199400), (2, 99700), (4, 49850), (5, 39880), (8, 24925), (10, 19940), (20, 9970), (25, 7976), (40, 4985), (50, 3988), (100, 1994), (200, 997)]