81529140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{2521}}^1$

素因数の和:2558

約数の個数: 144

約数和(自身を含む): 289808064

約数和(自身を除く): 208278924

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 28, 30, 33, 35, 42, 44, 49, 55, 60, 66, 70, 77, 84, 98, 105, 110, 132, 140, 147, 154, 165, 196, 210, 220, 231, 245, 294, 308, 330, 385, 420, 462, 490, 539, 588, 660, 735, 770, 924, 980, 1078, 1155, 1470, 1540, 1617, 2156, 2310, 2521, 2695, 2940, 3234, 4620, 5042, 5390, 6468, 7563, 8085, 10084, 10780, 12605, 15126, 16170, 17647, 25210, 27731, 30252, 32340, 35294, 37815, 50420, 52941, 55462, 70588, 75630, 83193, 88235, 105882, 110924, 123529, 138655, 151260, 166386, 176470, 194117, 211764, 247058, 264705, 277310, 332772, 352940, 370587, 388234, 415965, 494116, 529410, 554620, 582351, 617645, 741174, 776468, 831930, 970585, 1058820, 1164702, 1235290, 1358819, 1482348, 1663860, 1852935, 1941170, 2329404, 2470580, 2717638, 2911755, 3705870, 3882340, 4076457, 5435276, 5823510, 6794095, 7411740, 8152914, 11647020, 13588190, 16305828, 20382285, 27176380, 40764570, 81529140]

約数ペア:

[(1, 81529140), (2, 40764570), (3, 27176380), (4, 20382285), (5, 16305828), (6, 13588190), (7, 11647020), (10, 8152914), (11, 7411740), (12, 6794095), (14, 5823510), (15, 5435276), (20, 4076457), (21, 3882340), (22, 3705870), (28, 2911755), (30, 2717638), (33, 2470580), (35, 2329404), (42, 1941170), (44, 1852935), (49, 1663860), (55, 1482348), (60, 1358819), (66, 1235290), (70, 1164702), (77, 1058820), (84, 970585), (98, 831930), (105, 776468), (110, 741174), (132, 617645), (140, 582351), (147, 554620), (154, 529410), (165, 494116), (196, 415965), (210, 388234), (220, 370587), (231, 352940), (245, 332772), (294, 277310), (308, 264705), (330, 247058), (385, 211764), (420, 194117), (462, 176470), (490, 166386), (539, 151260), (588, 138655), (660, 123529), (735, 110924), (770, 105882), (924, 88235), (980, 83193), (1078, 75630), (1155, 70588), (1470, 55462), (1540, 52941), (1617, 50420), (2156, 37815), (2310, 35294), (2521, 32340), (2695, 30252), (2940, 27731), (3234, 25210), (4620, 17647), (5042, 16170), (5390, 15126), (6468, 12605), (7563, 10780), (8085, 10084)]