21175000

素因数分解:

$2^3\times 5^5\times 7^1\times {\mathrm{11}}^2$

素因数の和:60

約数の個数: 144

約数和(自身を含む): 62339760

約数和(自身を除く): 41164760

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 25, 28, 35, 40, 44, 50, 55, 56, 70, 77, 88, 100, 110, 121, 125, 140, 154, 175, 200, 220, 242, 250, 275, 280, 308, 350, 385, 440, 484, 500, 550, 605, 616, 625, 700, 770, 847, 875, 968, 1000, 1100, 1210, 1250, 1375, 1400, 1540, 1694, 1750, 1925, 2200, 2420, 2500, 2750, 3025, 3080, 3125, 3388, 3500, 3850, 4235, 4375, 4840, 5000, 5500, 6050, 6250, 6776, 6875, 7000, 7700, 8470, 8750, 9625, 11000, 12100, 12500, 13750, 15125, 15400, 16940, 17500, 19250, 21175, 21875, 24200, 25000, 27500, 30250, 33880, 34375, 35000, 38500, 42350, 43750, 48125, 55000, 60500, 68750, 75625, 77000, 84700, 87500, 96250, 105875, 121000, 137500, 151250, 169400, 175000, 192500, 211750, 240625, 275000, 302500, 378125, 385000, 423500, 481250, 529375, 605000, 756250, 847000, 962500, 1058750, 1512500, 1925000, 2117500, 2646875, 3025000, 4235000, 5293750, 10587500, 21175000]

約数ペア:

[(1, 21175000), (2, 10587500), (4, 5293750), (5, 4235000), (7, 3025000), (8, 2646875), (10, 2117500), (11, 1925000), (14, 1512500), (20, 1058750), (22, 962500), (25, 847000), (28, 756250), (35, 605000), (40, 529375), (44, 481250), (50, 423500), (55, 385000), (56, 378125), (70, 302500), (77, 275000), (88, 240625), (100, 211750), (110, 192500), (121, 175000), (125, 169400), (140, 151250), (154, 137500), (175, 121000), (200, 105875), (220, 96250), (242, 87500), (250, 84700), (275, 77000), (280, 75625), (308, 68750), (350, 60500), (385, 55000), (440, 48125), (484, 43750), (500, 42350), (550, 38500), (605, 35000), (616, 34375), (625, 33880), (700, 30250), (770, 27500), (847, 25000), (875, 24200), (968, 21875), (1000, 21175), (1100, 19250), (1210, 17500), (1250, 16940), (1375, 15400), (1400, 15125), (1540, 13750), (1694, 12500), (1750, 12100), (1925, 11000), (2200, 9625), (2420, 8750), (2500, 8470), (2750, 7700), (3025, 7000), (3080, 6875), (3125, 6776), (3388, 6250), (3500, 6050), (3850, 5500), (4235, 5000), (4375, 4840)]