81401320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1$

素因数の和:168

約数の個数: 256

約数和(自身を含む): 261273600

約数和(自身を除く): 179872280

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 19, 20, 22, 26, 28, 35, 38, 40, 44, 52, 55, 56, 65, 70, 76, 77, 88, 91, 95, 104, 107, 110, 130, 133, 140, 143, 152, 154, 182, 190, 209, 214, 220, 247, 260, 266, 280, 286, 308, 364, 380, 385, 418, 428, 440, 455, 494, 520, 532, 535, 572, 616, 665, 715, 728, 749, 760, 770, 836, 856, 910, 988, 1001, 1045, 1064, 1070, 1144, 1177, 1235, 1330, 1391, 1430, 1463, 1498, 1540, 1672, 1729, 1820, 1976, 2002, 2033, 2090, 2140, 2354, 2470, 2660, 2717, 2782, 2860, 2926, 2996, 3080, 3458, 3640, 3745, 4004, 4066, 4180, 4280, 4708, 4940, 5005, 5320, 5434, 5564, 5720, 5852, 5885, 5992, 6916, 6955, 7315, 7490, 8008, 8132, 8239, 8360, 8645, 9416, 9737, 9880, 10010, 10165, 10868, 11128, 11704, 11770, 13585, 13832, 13910, 14231, 14630, 14980, 15301, 16264, 16478, 17290, 19019, 19474, 20020, 20330, 21736, 22363, 23540, 26429, 27170, 27820, 28462, 29260, 29960, 30602, 32956, 34580, 38038, 38948, 40040, 40660, 41195, 44726, 47080, 48685, 52858, 54340, 55640, 56924, 58520, 61204, 65912, 69160, 71155, 76076, 76505, 77896, 81320, 82390, 89452, 95095, 97370, 105716, 107107, 108680, 111815, 113848, 122408, 132145, 142310, 152152, 153010, 156541, 164780, 178904, 185003, 190190, 194740, 211432, 214214, 223630, 264290, 284620, 290719, 306020, 313082, 329560, 370006, 380380, 389480, 428428, 447260, 528580, 535535, 569240, 581438, 612040, 626164, 740012, 760760, 782705, 856856, 894520, 925015, 1057160, 1071070, 1162876, 1252328, 1453595, 1480024, 1565410, 1850030, 2035033, 2142140, 2325752, 2907190, 3130820, 3700060, 4070066, 4284280, 5814380, 6261640, 7400120, 8140132, 10175165, 11628760, 16280264, 20350330, 40700660, 81401320]

約数ペア:

[(1, 81401320), (2, 40700660), (4, 20350330), (5, 16280264), (7, 11628760), (8, 10175165), (10, 8140132), (11, 7400120), (13, 6261640), (14, 5814380), (19, 4284280), (20, 4070066), (22, 3700060), (26, 3130820), (28, 2907190), (35, 2325752), (38, 2142140), (40, 2035033), (44, 1850030), (52, 1565410), (55, 1480024), (56, 1453595), (65, 1252328), (70, 1162876), (76, 1071070), (77, 1057160), (88, 925015), (91, 894520), (95, 856856), (104, 782705), (107, 760760), (110, 740012), (130, 626164), (133, 612040), (140, 581438), (143, 569240), (152, 535535), (154, 528580), (182, 447260), (190, 428428), (209, 389480), (214, 380380), (220, 370006), (247, 329560), (260, 313082), (266, 306020), (280, 290719), (286, 284620), (308, 264290), (364, 223630), (380, 214214), (385, 211432), (418, 194740), (428, 190190), (440, 185003), (455, 178904), (494, 164780), (520, 156541), (532, 153010), (535, 152152), (572, 142310), (616, 132145), (665, 122408), (715, 113848), (728, 111815), (749, 108680), (760, 107107), (770, 105716), (836, 97370), (856, 95095), (910, 89452), (988, 82390), (1001, 81320), (1045, 77896), (1064, 76505), (1070, 76076), (1144, 71155), (1177, 69160), (1235, 65912), (1330, 61204), (1391, 58520), (1430, 56924), (1463, 55640), (1498, 54340), (1540, 52858), (1672, 48685), (1729, 47080), (1820, 44726), (1976, 41195), (2002, 40660), (2033, 40040), (2090, 38948), (2140, 38038), (2354, 34580), (2470, 32956), (2660, 30602), (2717, 29960), (2782, 29260), (2860, 28462), (2926, 27820), (2996, 27170), (3080, 26429), (3458, 23540), (3640, 22363), (3745, 21736), (4004, 20330), (4066, 20020), (4180, 19474), (4280, 19019), (4708, 17290), (4940, 16478), (5005, 16264), (5320, 15301), (5434, 14980), (5564, 14630), (5720, 14231), (5852, 13910), (5885, 13832), (5992, 13585), (6916, 11770), (6955, 11704), (7315, 11128), (7490, 10868), (8008, 10165), (8132, 10010), (8239, 9880), (8360, 9737), (8645, 9416)]