21020996864

素因数分解:

$2^8\times 7^2\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{991}}^1$

素因数の和:1129

約数の個数: 216

約数和(自身を含む): 52009171200

約数和(自身を除く): 30988174336

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 32, 38, 49, 56, 64, 76, 89, 98, 112, 128, 133, 152, 178, 196, 224, 256, 266, 304, 356, 392, 448, 532, 608, 623, 712, 784, 896, 931, 991, 1064, 1216, 1246, 1424, 1568, 1691, 1792, 1862, 1982, 2128, 2432, 2492, 2848, 3136, 3382, 3724, 3964, 4256, 4361, 4864, 4984, 5696, 6272, 6764, 6937, 7448, 7928, 8512, 8722, 9968, 11392, 11837, 12544, 13528, 13874, 14896, 15856, 17024, 17444, 18829, 19936, 22784, 23674, 27056, 27748, 29792, 31712, 34048, 34888, 37658, 39872, 47348, 48559, 54112, 55496, 59584, 63424, 69776, 75316, 79744, 82859, 88199, 94696, 97118, 108224, 110992, 119168, 126848, 131803, 139552, 150632, 159488, 165718, 176398, 189392, 194236, 216448, 221984, 238336, 253696, 263606, 279104, 301264, 331436, 352796, 378784, 388472, 432896, 443968, 527212, 558208, 602528, 617393, 662872, 705592, 757568, 776944, 887936, 922621, 1054424, 1116416, 1205056, 1234786, 1325744, 1411184, 1515136, 1553888, 1675781, 1775872, 1845242, 2108848, 2410112, 2469572, 2651488, 2822368, 3030272, 3107776, 3351562, 3690484, 4217696, 4321751, 4820224, 4939144, 5302976, 5644736, 6215552, 6703124, 7380968, 8435392, 8643502, 9878288, 10605952, 11289472, 11730467, 12431104, 13406248, 14761936, 16870784, 17287004, 19756576, 21211904, 22578944, 23460934, 26812496, 29523872, 33741568, 34574008, 39513152, 46921868, 53624992, 59047744, 69148016, 79026304, 82113269, 93843736, 107249984, 118095488, 138296032, 158052608, 164226538, 187687472, 214499968, 236190976, 276592064, 328453076, 375374944, 428999936, 553184128, 656906152, 750749888, 1106368256, 1313812304, 1501499776, 2627624608, 3002999552, 5255249216, 10510498432, 21020996864]

約数ペア:

[(1, 21020996864), (2, 10510498432), (4, 5255249216), (7, 3002999552), (8, 2627624608), (14, 1501499776), (16, 1313812304), (19, 1106368256), (28, 750749888), (32, 656906152), (38, 553184128), (49, 428999936), (56, 375374944), (64, 328453076), (76, 276592064), (89, 236190976), (98, 214499968), (112, 187687472), (128, 164226538), (133, 158052608), (152, 138296032), (178, 118095488), (196, 107249984), (224, 93843736), (256, 82113269), (266, 79026304), (304, 69148016), (356, 59047744), (392, 53624992), (448, 46921868), (532, 39513152), (608, 34574008), (623, 33741568), (712, 29523872), (784, 26812496), (896, 23460934), (931, 22578944), (991, 21211904), (1064, 19756576), (1216, 17287004), (1246, 16870784), (1424, 14761936), (1568, 13406248), (1691, 12431104), (1792, 11730467), (1862, 11289472), (1982, 10605952), (2128, 9878288), (2432, 8643502), (2492, 8435392), (2848, 7380968), (3136, 6703124), (3382, 6215552), (3724, 5644736), (3964, 5302976), (4256, 4939144), (4361, 4820224), (4864, 4321751), (4984, 4217696), (5696, 3690484), (6272, 3351562), (6764, 3107776), (6937, 3030272), (7448, 2822368), (7928, 2651488), (8512, 2469572), (8722, 2410112), (9968, 2108848), (11392, 1845242), (11837, 1775872), (12544, 1675781), (13528, 1553888), (13874, 1515136), (14896, 1411184), (15856, 1325744), (17024, 1234786), (17444, 1205056), (18829, 1116416), (19936, 1054424), (22784, 922621), (23674, 887936), (27056, 776944), (27748, 757568), (29792, 705592), (31712, 662872), (34048, 617393), (34888, 602528), (37658, 558208), (39872, 527212), (47348, 443968), (48559, 432896), (54112, 388472), (55496, 378784), (59584, 352796), (63424, 331436), (69776, 301264), (75316, 279104), (79744, 263606), (82859, 253696), (88199, 238336), (94696, 221984), (97118, 216448), (108224, 194236), (110992, 189392), (119168, 176398), (126848, 165718), (131803, 159488), (139552, 150632)]