12437500

素因数分解:

$2^2\times 5^6\times {\mathrm{199}}^1$

素因数の和:233

約数の個数: 42

約数和(自身を含む): 27343400

約数和(自身を除く): 14905900

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, 15625, 19900, 24875, 31250, 49750, 62500, 99500, 124375, 248750, 497500, 621875, 1243750, 2487500, 3109375, 6218750, 12437500]

約数ペア:

[(1, 12437500), (2, 6218750), (4, 3109375), (5, 2487500), (10, 1243750), (20, 621875), (25, 497500), (50, 248750), (100, 124375), (125, 99500), (199, 62500), (250, 49750), (398, 31250), (500, 24875), (625, 19900), (796, 15625), (995, 12500), (1250, 9950), (1990, 6250), (2500, 4975), (3125, 3980)]