20780928

素因数分解:

$2^7\times 3^3\times 7^1\times {\mathrm{859}}^1$

素因数の和:889

約数の個数: 128

約数和(自身を含む): 70176000

約数和(自身を除く): 49395072

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 32, 36, 42, 48, 54, 56, 63, 64, 72, 84, 96, 108, 112, 126, 128, 144, 168, 189, 192, 216, 224, 252, 288, 336, 378, 384, 432, 448, 504, 576, 672, 756, 859, 864, 896, 1008, 1152, 1344, 1512, 1718, 1728, 2016, 2577, 2688, 3024, 3436, 3456, 4032, 5154, 6013, 6048, 6872, 7731, 8064, 10308, 12026, 12096, 13744, 15462, 18039, 20616, 23193, 24052, 24192, 27488, 30924, 36078, 41232, 46386, 48104, 54117, 54976, 61848, 72156, 82464, 92772, 96208, 108234, 109952, 123696, 144312, 162351, 164928, 185544, 192416, 216468, 247392, 288624, 324702, 329856, 371088, 384832, 432936, 494784, 577248, 649404, 742176, 769664, 865872, 989568, 1154496, 1298808, 1484352, 1731744, 2308992, 2597616, 2968704, 3463488, 5195232, 6926976, 10390464, 20780928]

約数ペア:

[(1, 20780928), (2, 10390464), (3, 6926976), (4, 5195232), (6, 3463488), (7, 2968704), (8, 2597616), (9, 2308992), (12, 1731744), (14, 1484352), (16, 1298808), (18, 1154496), (21, 989568), (24, 865872), (27, 769664), (28, 742176), (32, 649404), (36, 577248), (42, 494784), (48, 432936), (54, 384832), (56, 371088), (63, 329856), (64, 324702), (72, 288624), (84, 247392), (96, 216468), (108, 192416), (112, 185544), (126, 164928), (128, 162351), (144, 144312), (168, 123696), (189, 109952), (192, 108234), (216, 96208), (224, 92772), (252, 82464), (288, 72156), (336, 61848), (378, 54976), (384, 54117), (432, 48104), (448, 46386), (504, 41232), (576, 36078), (672, 30924), (756, 27488), (859, 24192), (864, 24052), (896, 23193), (1008, 20616), (1152, 18039), (1344, 15462), (1512, 13744), (1718, 12096), (1728, 12026), (2016, 10308), (2577, 8064), (2688, 7731), (3024, 6872), (3436, 6048), (3456, 6013), (4032, 5154)]