20101984

素因数分解:

$2^5\times 7^1\times {\mathrm{43}}^1\times {\mathrm{2087}}^1$

素因数の和:2147

約数の個数: 48

約数和(自身を含む): 46303488

約数和(自身を除く): 26201504

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 43, 56, 86, 112, 172, 224, 301, 344, 602, 688, 1204, 1376, 2087, 2408, 4174, 4816, 8348, 9632, 14609, 16696, 29218, 33392, 58436, 66784, 89741, 116872, 179482, 233744, 358964, 467488, 628187, 717928, 1256374, 1435856, 2512748, 2871712, 5025496, 10050992, 20101984]

約数ペア:

[(1, 20101984), (2, 10050992), (4, 5025496), (7, 2871712), (8, 2512748), (14, 1435856), (16, 1256374), (28, 717928), (32, 628187), (43, 467488), (56, 358964), (86, 233744), (112, 179482), (172, 116872), (224, 89741), (301, 66784), (344, 58436), (602, 33392), (688, 29218), (1204, 16696), (1376, 14609), (2087, 9632), (2408, 8348), (4174, 4816)]