19502000

素因数分解:

$2^4\times 5^3\times 7^2\times {\mathrm{199}}^1$

素因数の和:236

約数の個数: 120

約数和(自身を含む): 55130400

約数和(自身を除く): 35628400

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, 125, 140, 175, 196, 199, 200, 245, 250, 280, 350, 392, 398, 400, 490, 500, 560, 700, 784, 796, 875, 980, 995, 1000, 1225, 1393, 1400, 1592, 1750, 1960, 1990, 2000, 2450, 2786, 2800, 3184, 3500, 3920, 3980, 4900, 4975, 5572, 6125, 6965, 7000, 7960, 9751, 9800, 9950, 11144, 12250, 13930, 14000, 15920, 19502, 19600, 19900, 22288, 24500, 24875, 27860, 34825, 39004, 39800, 48755, 49000, 49750, 55720, 69650, 78008, 79600, 97510, 98000, 99500, 111440, 139300, 156016, 174125, 195020, 199000, 243775, 278600, 348250, 390040, 398000, 487550, 557200, 696500, 780080, 975100, 1218875, 1393000, 1950200, 2437750, 2786000, 3900400, 4875500, 9751000, 19502000]

約数ペア:

[(1, 19502000), (2, 9751000), (4, 4875500), (5, 3900400), (7, 2786000), (8, 2437750), (10, 1950200), (14, 1393000), (16, 1218875), (20, 975100), (25, 780080), (28, 696500), (35, 557200), (40, 487550), (49, 398000), (50, 390040), (56, 348250), (70, 278600), (80, 243775), (98, 199000), (100, 195020), (112, 174125), (125, 156016), (140, 139300), (175, 111440), (196, 99500), (199, 98000), (200, 97510), (245, 79600), (250, 78008), (280, 69650), (350, 55720), (392, 49750), (398, 49000), (400, 48755), (490, 39800), (500, 39004), (560, 34825), (700, 27860), (784, 24875), (796, 24500), (875, 22288), (980, 19900), (995, 19600), (1000, 19502), (1225, 15920), (1393, 14000), (1400, 13930), (1592, 12250), (1750, 11144), (1960, 9950), (1990, 9800), (2000, 9751), (2450, 7960), (2786, 7000), (2800, 6965), (3184, 6125), (3500, 5572), (3920, 4975), (3980, 4900)]