439120

素因数分解:

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

素因数の和:523

約数の個数: 40

約数和(自身を含む): 1116000

約数和(自身を除く): 676880

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 499, 880, 998, 1996, 2495, 3992, 4990, 5489, 7984, 9980, 10978, 19960, 21956, 27445, 39920, 43912, 54890, 87824, 109780, 219560, 439120]

約数ペア:

[(1, 439120), (2, 219560), (4, 109780), (5, 87824), (8, 54890), (10, 43912), (11, 39920), (16, 27445), (20, 21956), (22, 19960), (40, 10978), (44, 9980), (55, 7984), (80, 5489), (88, 4990), (110, 3992), (176, 2495), (220, 1996), (440, 998), (499, 880)]