25487920

素因数分解:

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

素因数の和:1813

約数の個数: 40

約数和(自身を含む): 59594400

約数和(自身を除く): 34106480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199, 398, 796, 995, 1592, 1601, 1990, 3184, 3202, 3980, 6404, 7960, 8005, 12808, 15920, 16010, 25616, 32020, 64040, 128080, 318599, 637198, 1274396, 1592995, 2548792, 3185990, 5097584, 6371980, 12743960, 25487920]

約数ペア:

[(1, 25487920), (2, 12743960), (4, 6371980), (5, 5097584), (8, 3185990), (10, 2548792), (16, 1592995), (20, 1274396), (40, 637198), (80, 318599), (199, 128080), (398, 64040), (796, 32020), (995, 25616), (1592, 16010), (1601, 15920), (1990, 12808), (3184, 8005), (3202, 7960), (3980, 6404)]