81556860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{139}}^1$

素因数の和:296

約数の個数: 192

約数和(自身を含む): 289013760

約数和(自身を除く): 207456900

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 28, 30, 33, 35, 42, 44, 55, 60, 66, 70, 77, 84, 105, 110, 127, 132, 139, 140, 154, 165, 210, 220, 231, 254, 278, 308, 330, 381, 385, 417, 420, 462, 508, 556, 635, 660, 695, 762, 770, 834, 889, 924, 973, 1155, 1270, 1390, 1397, 1524, 1529, 1540, 1668, 1778, 1905, 1946, 2085, 2310, 2540, 2667, 2780, 2794, 2919, 3058, 3556, 3810, 3892, 4170, 4191, 4445, 4587, 4620, 4865, 5334, 5588, 5838, 6116, 6985, 7620, 7645, 8340, 8382, 8890, 9174, 9730, 9779, 10668, 10703, 11676, 13335, 13970, 14595, 15290, 16764, 17653, 17780, 18348, 19460, 19558, 20955, 21406, 22935, 26670, 27940, 29190, 29337, 30580, 32109, 35306, 39116, 41910, 42812, 45870, 48895, 52959, 53340, 53515, 58380, 58674, 64218, 70612, 83820, 88265, 91740, 97790, 105918, 107030, 117348, 123571, 128436, 146685, 160545, 176530, 194183, 195580, 211836, 214060, 247142, 264795, 293370, 321090, 353060, 370713, 388366, 494284, 529590, 582549, 586740, 617855, 642180, 741426, 776732, 970915, 1059180, 1165098, 1235710, 1359281, 1482852, 1853565, 1941830, 2330196, 2471420, 2718562, 2912745, 3707130, 3883660, 4077843, 5437124, 5825490, 6796405, 7414260, 8155686, 11650980, 13592810, 16311372, 20389215, 27185620, 40778430, 81556860]

約数ペア:

[(1, 81556860), (2, 40778430), (3, 27185620), (4, 20389215), (5, 16311372), (6, 13592810), (7, 11650980), (10, 8155686), (11, 7414260), (12, 6796405), (14, 5825490), (15, 5437124), (20, 4077843), (21, 3883660), (22, 3707130), (28, 2912745), (30, 2718562), (33, 2471420), (35, 2330196), (42, 1941830), (44, 1853565), (55, 1482852), (60, 1359281), (66, 1235710), (70, 1165098), (77, 1059180), (84, 970915), (105, 776732), (110, 741426), (127, 642180), (132, 617855), (139, 586740), (140, 582549), (154, 529590), (165, 494284), (210, 388366), (220, 370713), (231, 353060), (254, 321090), (278, 293370), (308, 264795), (330, 247142), (381, 214060), (385, 211836), (417, 195580), (420, 194183), (462, 176530), (508, 160545), (556, 146685), (635, 128436), (660, 123571), (695, 117348), (762, 107030), (770, 105918), (834, 97790), (889, 91740), (924, 88265), (973, 83820), (1155, 70612), (1270, 64218), (1390, 58674), (1397, 58380), (1524, 53515), (1529, 53340), (1540, 52959), (1668, 48895), (1778, 45870), (1905, 42812), (1946, 41910), (2085, 39116), (2310, 35306), (2540, 32109), (2667, 30580), (2780, 29337), (2794, 29190), (2919, 27940), (3058, 26670), (3556, 22935), (3810, 21406), (3892, 20955), (4170, 19558), (4191, 19460), (4445, 18348), (4587, 17780), (4620, 17653), (4865, 16764), (5334, 15290), (5588, 14595), (5838, 13970), (6116, 13335), (6985, 11676), (7620, 10703), (7645, 10668), (8340, 9779), (8382, 9730), (8890, 9174)]