21028686

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{4861}}^1$

素因数の和:4976

約数の個数: 32

約数和(自身を含む): 48542208

約数和(自身を除く): 27513522

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 103, 206, 309, 618, 721, 1442, 2163, 4326, 4861, 9722, 14583, 29166, 34027, 68054, 102081, 204162, 500683, 1001366, 1502049, 3004098, 3504781, 7009562, 10514343, 21028686]

約数ペア:

[(1, 21028686), (2, 10514343), (3, 7009562), (6, 3504781), (7, 3004098), (14, 1502049), (21, 1001366), (42, 500683), (103, 204162), (206, 102081), (309, 68054), (618, 34027), (721, 29166), (1442, 14583), (2163, 9722), (4326, 4861)]