21260656

素因数分解:

$2^4\times {\mathrm{337}}^1\times {\mathrm{3943}}^1$

素因数の和:4288

約数の個数: 20

約数和(自身を含む): 41325232

約数和(自身を除く): 20064576

約数列:

[1, 2, 4, 8, 16, 337, 674, 1348, 2696, 3943, 5392, 7886, 15772, 31544, 63088, 1328791, 2657582, 5315164, 10630328, 21260656]

約数ペア:

[(1, 21260656), (2, 10630328), (4, 5315164), (8, 2657582), (16, 1328791), (337, 63088), (674, 31544), (1348, 15772), (2696, 7886), (3943, 5392)]