218281640

素因数分解:

$2^3\times 5^1\times {\mathrm{337}}^1\times {\mathrm{16193}}^1$

素因数の和:16541

約数の個数: 32

約数和(自身を含む): 492621480

約数和(自身を除く): 274339840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 337, 674, 1348, 1685, 2696, 3370, 6740, 13480, 16193, 32386, 64772, 80965, 129544, 161930, 323860, 647720, 5457041, 10914082, 21828164, 27285205, 43656328, 54570410, 109140820, 218281640]

約数ペア:

[(1, 218281640), (2, 109140820), (4, 54570410), (5, 43656328), (8, 27285205), (10, 21828164), (20, 10914082), (40, 5457041), (337, 647720), (674, 323860), (1348, 161930), (1685, 129544), (2696, 80965), (3370, 64772), (6740, 32386), (13480, 16193)]