87384880

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{499}}^1$

素因数の和:722

約数の個数: 80

約数和(自身を含む): 223200000

約数和(自身を除く): 135815120

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 199, 220, 398, 440, 499, 796, 880, 995, 998, 1592, 1990, 1996, 2189, 2495, 3184, 3980, 3992, 4378, 4990, 5489, 7960, 7984, 8756, 9980, 10945, 10978, 15920, 17512, 19960, 21890, 21956, 27445, 35024, 39920, 43780, 43912, 54890, 87560, 87824, 99301, 109780, 175120, 198602, 219560, 397204, 439120, 496505, 794408, 993010, 1092311, 1588816, 1986020, 2184622, 3972040, 4369244, 5461555, 7944080, 8738488, 10923110, 17476976, 21846220, 43692440, 87384880]

約数ペア:

[(1, 87384880), (2, 43692440), (4, 21846220), (5, 17476976), (8, 10923110), (10, 8738488), (11, 7944080), (16, 5461555), (20, 4369244), (22, 3972040), (40, 2184622), (44, 1986020), (55, 1588816), (80, 1092311), (88, 993010), (110, 794408), (176, 496505), (199, 439120), (220, 397204), (398, 219560), (440, 198602), (499, 175120), (796, 109780), (880, 99301), (995, 87824), (998, 87560), (1592, 54890), (1990, 43912), (1996, 43780), (2189, 39920), (2495, 35024), (3184, 27445), (3980, 21956), (3992, 21890), (4378, 19960), (4990, 17512), (5489, 15920), (7960, 10978), (7984, 10945), (8756, 9980)]