995000

素因数分解:

$2^3\times 5^4\times {\mathrm{199}}^1$

素因数の和:225

約数の個数: 40

約数和(自身を含む): 2343000

約数和(自身を除く): 1348000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 199, 200, 250, 398, 500, 625, 796, 995, 1000, 1250, 1592, 1990, 2500, 3980, 4975, 5000, 7960, 9950, 19900, 24875, 39800, 49750, 99500, 124375, 199000, 248750, 497500, 995000]

約数ペア:

[(1, 995000), (2, 497500), (4, 248750), (5, 199000), (8, 124375), (10, 99500), (20, 49750), (25, 39800), (40, 24875), (50, 19900), (100, 9950), (125, 7960), (199, 5000), (200, 4975), (250, 3980), (398, 2500), (500, 1990), (625, 1592), (796, 1250), (995, 1000)]