21000657664

素因数分解:

$2^8\times 7^1\times {\mathrm{113}}^1\times {\mathrm{137}}^1\times {\mathrm{757}}^1$

素因数の和:1030

約数の個数: 144

約数和(自身を含む): 48748811328

約数和(自身を除く): 27748153664

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 113, 128, 137, 224, 226, 256, 274, 448, 452, 548, 757, 791, 896, 904, 959, 1096, 1514, 1582, 1792, 1808, 1918, 2192, 3028, 3164, 3616, 3836, 4384, 5299, 6056, 6328, 7232, 7672, 8768, 10598, 12112, 12656, 14464, 15344, 15481, 17536, 21196, 24224, 25312, 28928, 30688, 30962, 35072, 42392, 48448, 50624, 61376, 61924, 84784, 85541, 96896, 101248, 103709, 108367, 122752, 123848, 169568, 171082, 193792, 202496, 207418, 216734, 245504, 247696, 339136, 342164, 414836, 433468, 495392, 598787, 678272, 684328, 725963, 829672, 866936, 990784, 1197574, 1356544, 1368656, 1451926, 1659344, 1733872, 1981568, 2395148, 2737312, 2903852, 3318688, 3467744, 3963136, 4790296, 5474624, 5807704, 6637376, 6935488, 9580592, 10949248, 11615408, 11719117, 13274752, 13870976, 19161184, 21898496, 23230816, 23438234, 26549504, 27741952, 38322368, 46461632, 46876468, 76644736, 82033819, 92923264, 93752936, 153289472, 164067638, 185846528, 187505872, 328135276, 375011744, 656270552, 750023488, 1312541104, 1500046976, 2625082208, 3000093952, 5250164416, 10500328832, 21000657664]

約数ペア:

[(1, 21000657664), (2, 10500328832), (4, 5250164416), (7, 3000093952), (8, 2625082208), (14, 1500046976), (16, 1312541104), (28, 750023488), (32, 656270552), (56, 375011744), (64, 328135276), (112, 187505872), (113, 185846528), (128, 164067638), (137, 153289472), (224, 93752936), (226, 92923264), (256, 82033819), (274, 76644736), (448, 46876468), (452, 46461632), (548, 38322368), (757, 27741952), (791, 26549504), (896, 23438234), (904, 23230816), (959, 21898496), (1096, 19161184), (1514, 13870976), (1582, 13274752), (1792, 11719117), (1808, 11615408), (1918, 10949248), (2192, 9580592), (3028, 6935488), (3164, 6637376), (3616, 5807704), (3836, 5474624), (4384, 4790296), (5299, 3963136), (6056, 3467744), (6328, 3318688), (7232, 2903852), (7672, 2737312), (8768, 2395148), (10598, 1981568), (12112, 1733872), (12656, 1659344), (14464, 1451926), (15344, 1368656), (15481, 1356544), (17536, 1197574), (21196, 990784), (24224, 866936), (25312, 829672), (28928, 725963), (30688, 684328), (30962, 678272), (35072, 598787), (42392, 495392), (48448, 433468), (50624, 414836), (61376, 342164), (61924, 339136), (84784, 247696), (85541, 245504), (96896, 216734), (101248, 207418), (103709, 202496), (108367, 193792), (122752, 171082), (123848, 169568)]