3995000

素因数分解:

$2^3\times 5^4\times {\mathrm{17}}^1\times {\mathrm{47}}^1$

素因数の和:90

約数の個数: 80

約数和(自身を含む): 10121760

約数和(自身を除く): 6126760

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 25, 34, 40, 47, 50, 68, 85, 94, 100, 125, 136, 170, 188, 200, 235, 250, 340, 376, 425, 470, 500, 625, 680, 799, 850, 940, 1000, 1175, 1250, 1598, 1700, 1880, 2125, 2350, 2500, 3196, 3400, 3995, 4250, 4700, 5000, 5875, 6392, 7990, 8500, 9400, 10625, 11750, 15980, 17000, 19975, 21250, 23500, 29375, 31960, 39950, 42500, 47000, 58750, 79900, 85000, 99875, 117500, 159800, 199750, 235000, 399500, 499375, 799000, 998750, 1997500, 3995000]

約数ペア:

[(1, 3995000), (2, 1997500), (4, 998750), (5, 799000), (8, 499375), (10, 399500), (17, 235000), (20, 199750), (25, 159800), (34, 117500), (40, 99875), (47, 85000), (50, 79900), (68, 58750), (85, 47000), (94, 42500), (100, 39950), (125, 31960), (136, 29375), (170, 23500), (188, 21250), (200, 19975), (235, 17000), (250, 15980), (340, 11750), (376, 10625), (425, 9400), (470, 8500), (500, 7990), (625, 6392), (680, 5875), (799, 5000), (850, 4700), (940, 4250), (1000, 3995), (1175, 3400), (1250, 3196), (1598, 2500), (1700, 2350), (1880, 2125)]