2255000

素因数分解:

$2^3\times 5^4\times {\mathrm{11}}^1\times {\mathrm{41}}^1$

素因数の和:78

約数の個数: 80

約数和(自身を含む): 5904360

約数和(自身を除く): 3649360

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, 625, 820, 902, 1000, 1025, 1100, 1250, 1375, 1640, 1804, 2050, 2200, 2255, 2500, 2750, 3608, 4100, 4510, 5000, 5125, 5500, 6875, 8200, 9020, 10250, 11000, 11275, 13750, 18040, 20500, 22550, 25625, 27500, 41000, 45100, 51250, 55000, 56375, 90200, 102500, 112750, 205000, 225500, 281875, 451000, 563750, 1127500, 2255000]

約数ペア:

[(1, 2255000), (2, 1127500), (4, 563750), (5, 451000), (8, 281875), (10, 225500), (11, 205000), (20, 112750), (22, 102500), (25, 90200), (40, 56375), (41, 55000), (44, 51250), (50, 45100), (55, 41000), (82, 27500), (88, 25625), (100, 22550), (110, 20500), (125, 18040), (164, 13750), (200, 11275), (205, 11000), (220, 10250), (250, 9020), (275, 8200), (328, 6875), (410, 5500), (440, 5125), (451, 5000), (500, 4510), (550, 4100), (625, 3608), (820, 2750), (902, 2500), (1000, 2255), (1025, 2200), (1100, 2050), (1250, 1804), (1375, 1640)]