18188600

素因数分解:

$2^3\times 5^2\times {\mathrm{199}}^1\times {\mathrm{457}}^1$

素因数の和:672

約数の個数: 48

約数和(自身を含む): 42594000

約数和(自身を除く): 24405400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 199, 200, 398, 457, 796, 914, 995, 1592, 1828, 1990, 2285, 3656, 3980, 4570, 4975, 7960, 9140, 9950, 11425, 18280, 19900, 22850, 39800, 45700, 90943, 91400, 181886, 363772, 454715, 727544, 909430, 1818860, 2273575, 3637720, 4547150, 9094300, 18188600]

約数ペア:

[(1, 18188600), (2, 9094300), (4, 4547150), (5, 3637720), (8, 2273575), (10, 1818860), (20, 909430), (25, 727544), (40, 454715), (50, 363772), (100, 181886), (199, 91400), (200, 90943), (398, 45700), (457, 39800), (796, 22850), (914, 19900), (995, 18280), (1592, 11425), (1828, 9950), (1990, 9140), (2285, 7960), (3656, 4975), (3980, 4570)]