780080

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{199}}^1$

素因数の和:226

約数の個数: 60

約数和(自身を含む): 2120400

約数和(自身を除く): 1340320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 199, 245, 280, 392, 398, 490, 560, 784, 796, 980, 995, 1393, 1592, 1960, 1990, 2786, 3184, 3920, 3980, 5572, 6965, 7960, 9751, 11144, 13930, 15920, 19502, 22288, 27860, 39004, 48755, 55720, 78008, 97510, 111440, 156016, 195020, 390040, 780080]

約数ペア:

[(1, 780080), (2, 390040), (4, 195020), (5, 156016), (7, 111440), (8, 97510), (10, 78008), (14, 55720), (16, 48755), (20, 39004), (28, 27860), (35, 22288), (40, 19502), (49, 15920), (56, 13930), (70, 11144), (80, 9751), (98, 7960), (112, 6965), (140, 5572), (196, 3980), (199, 3920), (245, 3184), (280, 2786), (392, 1990), (398, 1960), (490, 1592), (560, 1393), (784, 995), (796, 980)]