20903276

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{197}}^1\times {\mathrm{647}}^1$

素因数の和:889

約数の個数: 24

約数和(自身を含む): 37721376

約数和(自身を除く): 16818100

約数列:

[1, 2, 4, 41, 82, 164, 197, 394, 647, 788, 1294, 2588, 8077, 16154, 26527, 32308, 53054, 106108, 127459, 254918, 509836, 5225819, 10451638, 20903276]

約数ペア:

[(1, 20903276), (2, 10451638), (4, 5225819), (41, 509836), (82, 254918), (164, 127459), (197, 106108), (394, 53054), (647, 32308), (788, 26527), (1294, 16154), (2588, 8077)]