451000

素因数分解:

$2^3\times 5^3\times {\mathrm{11}}^1\times {\mathrm{41}}^1$

素因数の和:73

約数の個数: 64

約数和(自身を含む): 1179360

約数和(自身を除く): 728360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 41, 44, 50, 55, 82, 88, 100, 110, 125, 164, 200, 205, 220, 250, 275, 328, 410, 440, 451, 500, 550, 820, 902, 1000, 1025, 1100, 1375, 1640, 1804, 2050, 2200, 2255, 2750, 3608, 4100, 4510, 5125, 5500, 8200, 9020, 10250, 11000, 11275, 18040, 20500, 22550, 41000, 45100, 56375, 90200, 112750, 225500, 451000]

約数ペア:

[(1, 451000), (2, 225500), (4, 112750), (5, 90200), (8, 56375), (10, 45100), (11, 41000), (20, 22550), (22, 20500), (25, 18040), (40, 11275), (41, 11000), (44, 10250), (50, 9020), (55, 8200), (82, 5500), (88, 5125), (100, 4510), (110, 4100), (125, 3608), (164, 2750), (200, 2255), (205, 2200), (220, 2050), (250, 1804), (275, 1640), (328, 1375), (410, 1100), (440, 1025), (451, 1000), (500, 902), (550, 820)]