81811400

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{907}}^1$

素因数の和:975

約数の個数: 96

約数和(自身を含む): 212798880

約数和(自身を除く): 130987480

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 41, 44, 50, 55, 82, 88, 100, 110, 164, 200, 205, 220, 275, 328, 410, 440, 451, 550, 820, 902, 907, 1025, 1100, 1640, 1804, 1814, 2050, 2200, 2255, 3608, 3628, 4100, 4510, 4535, 7256, 8200, 9020, 9070, 9977, 11275, 18040, 18140, 19954, 22550, 22675, 36280, 37187, 39908, 45100, 45350, 49885, 74374, 79816, 90200, 90700, 99770, 148748, 181400, 185935, 199540, 249425, 297496, 371870, 399080, 409057, 498850, 743740, 818114, 929675, 997700, 1487480, 1636228, 1859350, 1995400, 2045285, 3272456, 3718700, 4090570, 7437400, 8181140, 10226425, 16362280, 20452850, 40905700, 81811400]

約数ペア:

[(1, 81811400), (2, 40905700), (4, 20452850), (5, 16362280), (8, 10226425), (10, 8181140), (11, 7437400), (20, 4090570), (22, 3718700), (25, 3272456), (40, 2045285), (41, 1995400), (44, 1859350), (50, 1636228), (55, 1487480), (82, 997700), (88, 929675), (100, 818114), (110, 743740), (164, 498850), (200, 409057), (205, 399080), (220, 371870), (275, 297496), (328, 249425), (410, 199540), (440, 185935), (451, 181400), (550, 148748), (820, 99770), (902, 90700), (907, 90200), (1025, 79816), (1100, 74374), (1640, 49885), (1804, 45350), (1814, 45100), (2050, 39908), (2200, 37187), (2255, 36280), (3608, 22675), (3628, 22550), (4100, 19954), (4510, 18140), (4535, 18040), (7256, 11275), (8200, 9977), (9020, 9070)]