7990000

素因数分解:

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

素因数の和:92

約数の個数: 100

約数和(自身を含む): 20918304

約数和(自身を除く): 12928304

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 34, 40, 47, 50, 68, 80, 85, 94, 100, 125, 136, 170, 188, 200, 235, 250, 272, 340, 376, 400, 425, 470, 500, 625, 680, 752, 799, 850, 940, 1000, 1175, 1250, 1360, 1598, 1700, 1880, 2000, 2125, 2350, 2500, 3196, 3400, 3760, 3995, 4250, 4700, 5000, 5875, 6392, 6800, 7990, 8500, 9400, 10000, 10625, 11750, 12784, 15980, 17000, 18800, 19975, 21250, 23500, 29375, 31960, 34000, 39950, 42500, 47000, 58750, 63920, 79900, 85000, 94000, 99875, 117500, 159800, 170000, 199750, 235000, 319600, 399500, 470000, 499375, 799000, 998750, 1598000, 1997500, 3995000, 7990000]

約数ペア:

[(1, 7990000), (2, 3995000), (4, 1997500), (5, 1598000), (8, 998750), (10, 799000), (16, 499375), (17, 470000), (20, 399500), (25, 319600), (34, 235000), (40, 199750), (47, 170000), (50, 159800), (68, 117500), (80, 99875), (85, 94000), (94, 85000), (100, 79900), (125, 63920), (136, 58750), (170, 47000), (188, 42500), (200, 39950), (235, 34000), (250, 31960), (272, 29375), (340, 23500), (376, 21250), (400, 19975), (425, 18800), (470, 17000), (500, 15980), (625, 12784), (680, 11750), (752, 10625), (799, 10000), (850, 9400), (940, 8500), (1000, 7990), (1175, 6800), (1250, 6392), (1360, 5875), (1598, 5000), (1700, 4700), (1880, 4250), (2000, 3995), (2125, 3760), (2350, 3400), (2500, 3196)]