20399008

素因数分解:

$2^5\times 7^1\times {\mathrm{19}}^1\times {\mathrm{4793}}^1$

素因数の和:4829

約数の個数: 48

約数和(自身を含む): 48323520

約数和(自身を除く): 27924512

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 32, 38, 56, 76, 112, 133, 152, 224, 266, 304, 532, 608, 1064, 2128, 4256, 4793, 9586, 19172, 33551, 38344, 67102, 76688, 91067, 134204, 153376, 182134, 268408, 364268, 536816, 637469, 728536, 1073632, 1274938, 1457072, 2549876, 2914144, 5099752, 10199504, 20399008]

約数ペア:

[(1, 20399008), (2, 10199504), (4, 5099752), (7, 2914144), (8, 2549876), (14, 1457072), (16, 1274938), (19, 1073632), (28, 728536), (32, 637469), (38, 536816), (56, 364268), (76, 268408), (112, 182134), (133, 153376), (152, 134204), (224, 91067), (266, 76688), (304, 67102), (532, 38344), (608, 33551), (1064, 19172), (2128, 9586), (4256, 4793)]