219560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{499}}^1$

素因数の和:521

約数の個数: 32

約数和(自身を含む): 540000

約数和(自身を除く): 320440

約数列:

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

約数ペア:

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