3900400

素因数分解:

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

素因数の和:231

約数の個数: 90

約数和(自身を含む): 10955400

約数和(自身を除く): 7055000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 49, 50, 56, 70, 80, 98, 100, 112, 140, 175, 196, 199, 200, 245, 280, 350, 392, 398, 400, 490, 560, 700, 784, 796, 980, 995, 1225, 1393, 1400, 1592, 1960, 1990, 2450, 2786, 2800, 3184, 3920, 3980, 4900, 4975, 5572, 6965, 7960, 9751, 9800, 9950, 11144, 13930, 15920, 19502, 19600, 19900, 22288, 27860, 34825, 39004, 39800, 48755, 55720, 69650, 78008, 79600, 97510, 111440, 139300, 156016, 195020, 243775, 278600, 390040, 487550, 557200, 780080, 975100, 1950200, 3900400]

約数ペア:

[(1, 3900400), (2, 1950200), (4, 975100), (5, 780080), (7, 557200), (8, 487550), (10, 390040), (14, 278600), (16, 243775), (20, 195020), (25, 156016), (28, 139300), (35, 111440), (40, 97510), (49, 79600), (50, 78008), (56, 69650), (70, 55720), (80, 48755), (98, 39800), (100, 39004), (112, 34825), (140, 27860), (175, 22288), (196, 19900), (199, 19600), (200, 19502), (245, 15920), (280, 13930), (350, 11144), (392, 9950), (398, 9800), (400, 9751), (490, 7960), (560, 6965), (700, 5572), (784, 4975), (796, 4900), (980, 3980), (995, 3920), (1225, 3184), (1393, 2800), (1400, 2786), (1592, 2450), (1960, 1990)]