997000

素因数分解:

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

素因数の和:1018

約数の個数: 32

約数和(自身を含む): 2335320

約数和(自身を除く): 1338320

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 997, 1000, 1994, 3988, 4985, 7976, 9970, 19940, 24925, 39880, 49850, 99700, 124625, 199400, 249250, 498500, 997000]

約数ペア:

[(1, 997000), (2, 498500), (4, 249250), (5, 199400), (8, 124625), (10, 99700), (20, 49850), (25, 39880), (40, 24925), (50, 19940), (100, 9970), (125, 7976), (200, 4985), (250, 3988), (500, 1994), (997, 1000)]