1890500

素因数分解:

$2^2\times 5^3\times {\mathrm{19}}^1\times {\mathrm{199}}^1$

素因数の和:237

約数の個数: 48

約数和(自身を含む): 4368000

約数和(自身を除く): 2477500

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 125, 190, 199, 250, 380, 398, 475, 500, 796, 950, 995, 1900, 1990, 2375, 3781, 3980, 4750, 4975, 7562, 9500, 9950, 15124, 18905, 19900, 24875, 37810, 49750, 75620, 94525, 99500, 189050, 378100, 472625, 945250, 1890500]

約数ペア:

[(1, 1890500), (2, 945250), (4, 472625), (5, 378100), (10, 189050), (19, 99500), (20, 94525), (25, 75620), (38, 49750), (50, 37810), (76, 24875), (95, 19900), (100, 18905), (125, 15124), (190, 9950), (199, 9500), (250, 7562), (380, 4975), (398, 4750), (475, 3980), (500, 3781), (796, 2375), (950, 1990), (995, 1900)]