19998783616

素因数分解:

$2^7\times 7^1\times {\mathrm{523}}^1\times {\mathrm{42677}}^1$

素因数の和:43221

約数の個数: 64

約数和(自身を含む): 45621074880

約数和(自身を除く): 25622291264

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 448, 523, 896, 1046, 2092, 3661, 4184, 7322, 8368, 14644, 16736, 29288, 33472, 42677, 58576, 66944, 85354, 117152, 170708, 234304, 298739, 341416, 468608, 597478, 682832, 1194956, 1365664, 2389912, 2731328, 4779824, 5462656, 9559648, 19119296, 22320071, 38238592, 44640142, 89280284, 156240497, 178560568, 312480994, 357121136, 624961988, 714242272, 1249923976, 1428484544, 2499847952, 2856969088, 4999695904, 9999391808, 19998783616]

約数ペア:

[(1, 19998783616), (2, 9999391808), (4, 4999695904), (7, 2856969088), (8, 2499847952), (14, 1428484544), (16, 1249923976), (28, 714242272), (32, 624961988), (56, 357121136), (64, 312480994), (112, 178560568), (128, 156240497), (224, 89280284), (448, 44640142), (523, 38238592), (896, 22320071), (1046, 19119296), (2092, 9559648), (3661, 5462656), (4184, 4779824), (7322, 2731328), (8368, 2389912), (14644, 1365664), (16736, 1194956), (29288, 682832), (33472, 597478), (42677, 468608), (58576, 341416), (66944, 298739), (85354, 234304), (117152, 170708)]