1997500

素因数分解:

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

素因数の和:88

約数の個数: 60

約数和(自身を含む): 4723488

約数和(自身を除く): 2725988

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 47, 50, 68, 85, 94, 100, 125, 170, 188, 235, 250, 340, 425, 470, 500, 625, 799, 850, 940, 1175, 1250, 1598, 1700, 2125, 2350, 2500, 3196, 3995, 4250, 4700, 5875, 7990, 8500, 10625, 11750, 15980, 19975, 21250, 23500, 29375, 39950, 42500, 58750, 79900, 99875, 117500, 199750, 399500, 499375, 998750, 1997500]

約数ペア:

[(1, 1997500), (2, 998750), (4, 499375), (5, 399500), (10, 199750), (17, 117500), (20, 99875), (25, 79900), (34, 58750), (47, 42500), (50, 39950), (68, 29375), (85, 23500), (94, 21250), (100, 19975), (125, 15980), (170, 11750), (188, 10625), (235, 8500), (250, 7990), (340, 5875), (425, 4700), (470, 4250), (500, 3995), (625, 3196), (799, 2500), (850, 2350), (940, 2125), (1175, 1700), (1250, 1598)]