81611220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:178

約数の個数: 192

約数和(自身を含む): 261273600

約数和(自身を除く): 179662380

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 29, 30, 31, 34, 51, 58, 60, 62, 68, 85, 87, 89, 93, 102, 116, 124, 145, 155, 170, 174, 178, 186, 204, 255, 267, 290, 310, 340, 348, 356, 372, 435, 445, 465, 493, 510, 527, 534, 580, 620, 870, 890, 899, 930, 986, 1020, 1054, 1068, 1335, 1479, 1513, 1581, 1740, 1780, 1798, 1860, 1972, 2108, 2465, 2581, 2635, 2670, 2697, 2759, 2958, 3026, 3162, 3596, 4495, 4539, 4930, 5162, 5270, 5340, 5394, 5518, 5916, 6052, 6324, 7395, 7565, 7743, 7905, 8277, 8990, 9078, 9860, 10324, 10540, 10788, 11036, 12905, 13485, 13795, 14790, 15130, 15283, 15486, 15810, 16554, 17980, 18156, 22695, 25810, 26970, 27590, 29580, 30260, 30566, 30972, 31620, 33108, 38715, 41385, 43877, 45390, 45849, 46903, 51620, 53940, 55180, 61132, 76415, 77430, 80011, 82770, 87754, 90780, 91698, 93806, 131631, 140709, 152830, 154860, 160022, 165540, 175508, 183396, 187612, 219385, 229245, 234515, 240033, 263262, 281418, 305660, 320044, 400055, 438770, 458490, 469030, 480066, 526524, 562836, 658155, 703545, 800110, 877540, 916980, 938060, 960132, 1200165, 1316310, 1360187, 1407090, 1600220, 2400330, 2632620, 2720374, 2814180, 4080561, 4800660, 5440748, 6800935, 8161122, 13601870, 16322244, 20402805, 27203740, 40805610, 81611220]

約数ペア:

[(1, 81611220), (2, 40805610), (3, 27203740), (4, 20402805), (5, 16322244), (6, 13601870), (10, 8161122), (12, 6800935), (15, 5440748), (17, 4800660), (20, 4080561), (29, 2814180), (30, 2720374), (31, 2632620), (34, 2400330), (51, 1600220), (58, 1407090), (60, 1360187), (62, 1316310), (68, 1200165), (85, 960132), (87, 938060), (89, 916980), (93, 877540), (102, 800110), (116, 703545), (124, 658155), (145, 562836), (155, 526524), (170, 480066), (174, 469030), (178, 458490), (186, 438770), (204, 400055), (255, 320044), (267, 305660), (290, 281418), (310, 263262), (340, 240033), (348, 234515), (356, 229245), (372, 219385), (435, 187612), (445, 183396), (465, 175508), (493, 165540), (510, 160022), (527, 154860), (534, 152830), (580, 140709), (620, 131631), (870, 93806), (890, 91698), (899, 90780), (930, 87754), (986, 82770), (1020, 80011), (1054, 77430), (1068, 76415), (1335, 61132), (1479, 55180), (1513, 53940), (1581, 51620), (1740, 46903), (1780, 45849), (1798, 45390), (1860, 43877), (1972, 41385), (2108, 38715), (2465, 33108), (2581, 31620), (2635, 30972), (2670, 30566), (2697, 30260), (2759, 29580), (2958, 27590), (3026, 26970), (3162, 25810), (3596, 22695), (4495, 18156), (4539, 17980), (4930, 16554), (5162, 15810), (5270, 15486), (5340, 15283), (5394, 15130), (5518, 14790), (5916, 13795), (6052, 13485), (6324, 12905), (7395, 11036), (7565, 10788), (7743, 10540), (7905, 10324), (8277, 9860), (8990, 9078)]