10978000

素因数分解:

$2^4\times 5^3\times {\mathrm{11}}^1\times {\mathrm{499}}^1$

素因数の和:533

約数の個数: 80

約数和(自身を含む): 29016000

約数和(自身を除く): 18038000

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 125, 176, 200, 220, 250, 275, 400, 440, 499, 500, 550, 880, 998, 1000, 1100, 1375, 1996, 2000, 2200, 2495, 2750, 3992, 4400, 4990, 5489, 5500, 7984, 9980, 10978, 11000, 12475, 19960, 21956, 22000, 24950, 27445, 39920, 43912, 49900, 54890, 62375, 87824, 99800, 109780, 124750, 137225, 199600, 219560, 249500, 274450, 439120, 499000, 548900, 686125, 998000, 1097800, 1372250, 2195600, 2744500, 5489000, 10978000]

約数ペア:

[(1, 10978000), (2, 5489000), (4, 2744500), (5, 2195600), (8, 1372250), (10, 1097800), (11, 998000), (16, 686125), (20, 548900), (22, 499000), (25, 439120), (40, 274450), (44, 249500), (50, 219560), (55, 199600), (80, 137225), (88, 124750), (100, 109780), (110, 99800), (125, 87824), (176, 62375), (200, 54890), (220, 49900), (250, 43912), (275, 39920), (400, 27445), (440, 24950), (499, 22000), (500, 21956), (550, 19960), (880, 12475), (998, 11000), (1000, 10978), (1100, 9980), (1375, 7984), (1996, 5500), (2000, 5489), (2200, 4990), (2495, 4400), (2750, 3992)]