209000

素因数分解:

$2^3\times 5^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1$

素因数の和:51

約数の個数: 64

約数和(自身を含む): 561600

約数和(自身を除く): 352600

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 25, 38, 40, 44, 50, 55, 76, 88, 95, 100, 110, 125, 152, 190, 200, 209, 220, 250, 275, 380, 418, 440, 475, 500, 550, 760, 836, 950, 1000, 1045, 1100, 1375, 1672, 1900, 2090, 2200, 2375, 2750, 3800, 4180, 4750, 5225, 5500, 8360, 9500, 10450, 11000, 19000, 20900, 26125, 41800, 52250, 104500, 209000]

約数ペア:

[(1, 209000), (2, 104500), (4, 52250), (5, 41800), (8, 26125), (10, 20900), (11, 19000), (19, 11000), (20, 10450), (22, 9500), (25, 8360), (38, 5500), (40, 5225), (44, 4750), (50, 4180), (55, 3800), (76, 2750), (88, 2375), (95, 2200), (100, 2090), (110, 1900), (125, 1672), (152, 1375), (190, 1100), (200, 1045), (209, 1000), (220, 950), (250, 836), (275, 760), (380, 550), (418, 500), (440, 475)]