21274672

素因数分解:

$2^4\times {\mathrm{269}}^1\times {\mathrm{4943}}^1$

素因数の和:5220

約数の個数: 20

約数和(自身を含む): 41381280

約数和(自身を除く): 20106608

約数列:

[1, 2, 4, 8, 16, 269, 538, 1076, 2152, 4304, 4943, 9886, 19772, 39544, 79088, 1329667, 2659334, 5318668, 10637336, 21274672]

約数ペア:

[(1, 21274672), (2, 10637336), (4, 5318668), (8, 2659334), (16, 1329667), (269, 79088), (538, 39544), (1076, 19772), (2152, 9886), (4304, 4943)]