80350000

素因数分解:

$2^4\times 5^5\times {\mathrm{1607}}^1$

素因数の和:1640

約数の個数: 60

約数和(自身を含む): 194706288

約数和(自身を除く): 114356288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 1607, 2000, 2500, 3125, 3214, 5000, 6250, 6428, 8035, 10000, 12500, 12856, 16070, 25000, 25712, 32140, 40175, 50000, 64280, 80350, 128560, 160700, 200875, 321400, 401750, 642800, 803500, 1004375, 1607000, 2008750, 3214000, 4017500, 5021875, 8035000, 10043750, 16070000, 20087500, 40175000, 80350000]

約数ペア:

[(1, 80350000), (2, 40175000), (4, 20087500), (5, 16070000), (8, 10043750), (10, 8035000), (16, 5021875), (20, 4017500), (25, 3214000), (40, 2008750), (50, 1607000), (80, 1004375), (100, 803500), (125, 642800), (200, 401750), (250, 321400), (400, 200875), (500, 160700), (625, 128560), (1000, 80350), (1250, 64280), (1607, 50000), (2000, 40175), (2500, 32140), (3125, 25712), (3214, 25000), (5000, 16070), (6250, 12856), (6428, 12500), (8035, 10000)]