21342688540

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^2\times {\mathrm{337}}^1$

素因数の和:528

約数の個数: 144

約数和(自身を含む): 48977562816

約数和(自身を除く): 27634874276

約数列:

[1, 2, 4, 5, 10, 20, 23, 37, 46, 61, 74, 92, 115, 122, 148, 185, 230, 244, 305, 337, 370, 460, 610, 674, 740, 851, 1220, 1348, 1403, 1685, 1702, 2257, 2806, 3370, 3404, 3721, 4255, 4514, 5612, 6740, 7015, 7442, 7751, 8510, 9028, 11285, 12469, 14030, 14884, 15502, 17020, 18605, 20557, 22570, 24938, 28060, 31004, 37210, 38755, 41114, 45140, 49876, 51911, 62345, 74420, 77510, 82228, 85583, 102785, 103822, 124690, 137677, 155020, 171166, 205570, 207644, 249380, 259555, 275354, 286787, 342332, 411140, 427915, 472811, 519110, 550708, 573574, 688385, 760609, 855830, 945622, 1038220, 1147148, 1253977, 1376770, 1433935, 1521218, 1711660, 1891244, 2364055, 2507954, 2753540, 2867870, 3042436, 3166571, 3803045, 4728110, 5015908, 5735740, 6269885, 6333142, 7606090, 9456220, 12539770, 12666284, 15212180, 15832855, 17494007, 25079540, 28841471, 31665710, 34988014, 46397149, 57682942, 63331420, 69976028, 87470035, 92794298, 115365884, 144207355, 174940070, 185588596, 231985745, 288414710, 349880140, 463971490, 576829420, 927942980, 1067134427, 2134268854, 4268537708, 5335672135, 10671344270, 21342688540]

約数ペア:

[(1, 21342688540), (2, 10671344270), (4, 5335672135), (5, 4268537708), (10, 2134268854), (20, 1067134427), (23, 927942980), (37, 576829420), (46, 463971490), (61, 349880140), (74, 288414710), (92, 231985745), (115, 185588596), (122, 174940070), (148, 144207355), (185, 115365884), (230, 92794298), (244, 87470035), (305, 69976028), (337, 63331420), (370, 57682942), (460, 46397149), (610, 34988014), (674, 31665710), (740, 28841471), (851, 25079540), (1220, 17494007), (1348, 15832855), (1403, 15212180), (1685, 12666284), (1702, 12539770), (2257, 9456220), (2806, 7606090), (3370, 6333142), (3404, 6269885), (3721, 5735740), (4255, 5015908), (4514, 4728110), (5612, 3803045), (6740, 3166571), (7015, 3042436), (7442, 2867870), (7751, 2753540), (8510, 2507954), (9028, 2364055), (11285, 1891244), (12469, 1711660), (14030, 1521218), (14884, 1433935), (15502, 1376770), (17020, 1253977), (18605, 1147148), (20557, 1038220), (22570, 945622), (24938, 855830), (28060, 760609), (31004, 688385), (37210, 573574), (38755, 550708), (41114, 519110), (45140, 472811), (49876, 427915), (51911, 411140), (62345, 342332), (74420, 286787), (77510, 275354), (82228, 259555), (85583, 249380), (102785, 207644), (103822, 205570), (124690, 171166), (137677, 155020)]