21294776

素因数分解:

$2^3\times {\mathrm{661}}^1\times {\mathrm{4027}}^1$

素因数の和:4694

約数の個数: 16

約数和(自身を含む): 39998040

約数和(自身を除く): 18703264

約数列:

[1, 2, 4, 8, 661, 1322, 2644, 4027, 5288, 8054, 16108, 32216, 2661847, 5323694, 10647388, 21294776]

約数ペア:

[(1, 21294776), (2, 10647388), (4, 5323694), (8, 2661847), (661, 32216), (1322, 16108), (2644, 8054), (4027, 5288)]