985000

素因数分解:

$2^3\times 5^4\times {\mathrm{197}}^1$

素因数の和:223

約数の個数: 40

約数和(自身を含む): 2319570

約数和(自身を除く): 1334570

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 197, 200, 250, 394, 500, 625, 788, 985, 1000, 1250, 1576, 1970, 2500, 3940, 4925, 5000, 7880, 9850, 19700, 24625, 39400, 49250, 98500, 123125, 197000, 246250, 492500, 985000]

約数ペア:

[(1, 985000), (2, 492500), (4, 246250), (5, 197000), (8, 123125), (10, 98500), (20, 49250), (25, 39400), (40, 24625), (50, 19700), (100, 9850), (125, 7880), (197, 5000), (200, 4925), (250, 3940), (394, 2500), (500, 1970), (625, 1576), (788, 1250), (985, 1000)]