127439600

素因数分解:

$2^4\times 5^2\times {\mathrm{199}}^1\times {\mathrm{1601}}^1$

素因数の和:1818

約数の個数: 60

約数和(自身を含む): 307904400

約数和(自身を除く): 180464800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 199, 200, 398, 400, 796, 995, 1592, 1601, 1990, 3184, 3202, 3980, 4975, 6404, 7960, 8005, 9950, 12808, 15920, 16010, 19900, 25616, 32020, 39800, 40025, 64040, 79600, 80050, 128080, 160100, 318599, 320200, 637198, 640400, 1274396, 1592995, 2548792, 3185990, 5097584, 6371980, 7964975, 12743960, 15929950, 25487920, 31859900, 63719800, 127439600]

約数ペア:

[(1, 127439600), (2, 63719800), (4, 31859900), (5, 25487920), (8, 15929950), (10, 12743960), (16, 7964975), (20, 6371980), (25, 5097584), (40, 3185990), (50, 2548792), (80, 1592995), (100, 1274396), (199, 640400), (200, 637198), (398, 320200), (400, 318599), (796, 160100), (995, 128080), (1592, 80050), (1601, 79600), (1990, 64040), (3184, 40025), (3202, 39800), (3980, 32020), (4975, 25616), (6404, 19900), (7960, 16010), (8005, 15920), (9950, 12808)]