2487500

素因数分解:

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

素因数の和:228

約数の個数: 36

約数和(自身を含む): 5468400

約数和(自身を除く): 2980900

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 199, 250, 398, 500, 625, 796, 995, 1250, 1990, 2500, 3125, 3980, 4975, 6250, 9950, 12500, 19900, 24875, 49750, 99500, 124375, 248750, 497500, 621875, 1243750, 2487500]

約数ペア:

[(1, 2487500), (2, 1243750), (4, 621875), (5, 497500), (10, 248750), (20, 124375), (25, 99500), (50, 49750), (100, 24875), (125, 19900), (199, 12500), (250, 9950), (398, 6250), (500, 4975), (625, 3980), (796, 3125), (995, 2500), (1250, 1990)]