21208258204

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{1049}}^1$

素因数の和:1236

約数の個数: 144

約数和(自身を含む): 46754820000

約数和(自身を除く): 25546561796

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 49, 61, 76, 89, 98, 122, 133, 178, 196, 244, 266, 356, 427, 532, 623, 854, 931, 1049, 1159, 1246, 1691, 1708, 1862, 2098, 2318, 2492, 2989, 3382, 3724, 4196, 4361, 4636, 5429, 5978, 6764, 7343, 8113, 8722, 10858, 11837, 11956, 14686, 16226, 17444, 19931, 21716, 23674, 29372, 32452, 38003, 39862, 47348, 51401, 56791, 63989, 76006, 79724, 82859, 93361, 102802, 103151, 113582, 127978, 139517, 152012, 165718, 186722, 205604, 206302, 227164, 255956, 266021, 279034, 331436, 373444, 412604, 447923, 532042, 558068, 653527, 722057, 895846, 976619, 1064084, 1215791, 1307054, 1444114, 1773859, 1791692, 1953238, 2431582, 2614108, 2888228, 3135461, 3547718, 3906476, 4574689, 4863164, 5054399, 5695021, 6270922, 7095436, 8510537, 9149378, 10108798, 11390042, 12417013, 12541844, 17021074, 18298756, 20217596, 22780084, 24834026, 34042148, 39865147, 49668052, 59573759, 79730294, 86919091, 108205399, 119147518, 159460588, 173838182, 216410798, 238295036, 279056029, 347676364, 432821596, 558112058, 757437793, 1116224116, 1514875586, 3029751172, 5302064551, 10604129102, 21208258204]

約数ペア:

[(1, 21208258204), (2, 10604129102), (4, 5302064551), (7, 3029751172), (14, 1514875586), (19, 1116224116), (28, 757437793), (38, 558112058), (49, 432821596), (61, 347676364), (76, 279056029), (89, 238295036), (98, 216410798), (122, 173838182), (133, 159460588), (178, 119147518), (196, 108205399), (244, 86919091), (266, 79730294), (356, 59573759), (427, 49668052), (532, 39865147), (623, 34042148), (854, 24834026), (931, 22780084), (1049, 20217596), (1159, 18298756), (1246, 17021074), (1691, 12541844), (1708, 12417013), (1862, 11390042), (2098, 10108798), (2318, 9149378), (2492, 8510537), (2989, 7095436), (3382, 6270922), (3724, 5695021), (4196, 5054399), (4361, 4863164), (4636, 4574689), (5429, 3906476), (5978, 3547718), (6764, 3135461), (7343, 2888228), (8113, 2614108), (8722, 2431582), (10858, 1953238), (11837, 1791692), (11956, 1773859), (14686, 1444114), (16226, 1307054), (17444, 1215791), (19931, 1064084), (21716, 976619), (23674, 895846), (29372, 722057), (32452, 653527), (38003, 558068), (39862, 532042), (47348, 447923), (51401, 412604), (56791, 373444), (63989, 331436), (76006, 279034), (79724, 266021), (82859, 255956), (93361, 227164), (102802, 206302), (103151, 205604), (113582, 186722), (127978, 165718), (139517, 152012)]