639231264

素因数分解:

$2^5\times 3^4\times 7^3\times {\mathrm{719}}^1$

素因数の和:762

約数の個数: 240

約数和(自身を含む): 2195424000

約数和(自身を除く): 1556192736

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 32, 36, 42, 48, 49, 54, 56, 63, 72, 81, 84, 96, 98, 108, 112, 126, 144, 147, 162, 168, 189, 196, 216, 224, 252, 288, 294, 324, 336, 343, 378, 392, 432, 441, 504, 567, 588, 648, 672, 686, 719, 756, 784, 864, 882, 1008, 1029, 1134, 1176, 1296, 1323, 1372, 1438, 1512, 1568, 1764, 2016, 2058, 2157, 2268, 2352, 2592, 2646, 2744, 2876, 3024, 3087, 3528, 3969, 4116, 4314, 4536, 4704, 5033, 5292, 5488, 5752, 6048, 6174, 6471, 7056, 7938, 8232, 8628, 9072, 9261, 10066, 10584, 10976, 11504, 12348, 12942, 14112, 15099, 15876, 16464, 17256, 18144, 18522, 19413, 20132, 21168, 23008, 24696, 25884, 27783, 30198, 31752, 32928, 34512, 35231, 37044, 38826, 40264, 42336, 45297, 49392, 51768, 55566, 58239, 60396, 63504, 69024, 70462, 74088, 77652, 80528, 90594, 98784, 103536, 105693, 111132, 116478, 120792, 127008, 135891, 140924, 148176, 155304, 161056, 181188, 207072, 211386, 222264, 232956, 241584, 246617, 271782, 281848, 296352, 310608, 317079, 362376, 407673, 422772, 444528, 465912, 483168, 493234, 543564, 563696, 621216, 634158, 724752, 739851, 815346, 845544, 889056, 931824, 951237, 986468, 1087128, 1127392, 1268316, 1449504, 1479702, 1630692, 1691088, 1863648, 1902474, 1972936, 2174256, 2219553, 2536632, 2853711, 2959404, 3261384, 3382176, 3804948, 3945872, 4348512, 4439106, 5073264, 5707422, 5918808, 6522768, 6658659, 7609896, 7891744, 8878212, 10146528, 11414844, 11837616, 13045536, 13317318, 15219792, 17756424, 19975977, 22829688, 23675232, 26634636, 30439584, 35512848, 39951954, 45659376, 53269272, 71025696, 79903908, 91318752, 106538544, 159807816, 213077088, 319615632, 639231264]

約数ペア:

[(1, 639231264), (2, 319615632), (3, 213077088), (4, 159807816), (6, 106538544), (7, 91318752), (8, 79903908), (9, 71025696), (12, 53269272), (14, 45659376), (16, 39951954), (18, 35512848), (21, 30439584), (24, 26634636), (27, 23675232), (28, 22829688), (32, 19975977), (36, 17756424), (42, 15219792), (48, 13317318), (49, 13045536), (54, 11837616), (56, 11414844), (63, 10146528), (72, 8878212), (81, 7891744), (84, 7609896), (96, 6658659), (98, 6522768), (108, 5918808), (112, 5707422), (126, 5073264), (144, 4439106), (147, 4348512), (162, 3945872), (168, 3804948), (189, 3382176), (196, 3261384), (216, 2959404), (224, 2853711), (252, 2536632), (288, 2219553), (294, 2174256), (324, 1972936), (336, 1902474), (343, 1863648), (378, 1691088), (392, 1630692), (432, 1479702), (441, 1449504), (504, 1268316), (567, 1127392), (588, 1087128), (648, 986468), (672, 951237), (686, 931824), (719, 889056), (756, 845544), (784, 815346), (864, 739851), (882, 724752), (1008, 634158), (1029, 621216), (1134, 563696), (1176, 543564), (1296, 493234), (1323, 483168), (1372, 465912), (1438, 444528), (1512, 422772), (1568, 407673), (1764, 362376), (2016, 317079), (2058, 310608), (2157, 296352), (2268, 281848), (2352, 271782), (2592, 246617), (2646, 241584), (2744, 232956), (2876, 222264), (3024, 211386), (3087, 207072), (3528, 181188), (3969, 161056), (4116, 155304), (4314, 148176), (4536, 140924), (4704, 135891), (5033, 127008), (5292, 120792), (5488, 116478), (5752, 111132), (6048, 105693), (6174, 103536), (6471, 98784), (7056, 90594), (7938, 80528), (8232, 77652), (8628, 74088), (9072, 70462), (9261, 69024), (10066, 63504), (10584, 60396), (10976, 58239), (11504, 55566), (12348, 51768), (12942, 49392), (14112, 45297), (15099, 42336), (15876, 40264), (16464, 38826), (17256, 37044), (18144, 35231), (18522, 34512), (19413, 32928), (20132, 31752), (21168, 30198), (23008, 27783), (24696, 25884)]