20711216

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{353}}^1$

素因数の和:573

約数の個数: 40

約数和(自身を含む): 42579120

約数和(自身を除く): 21867904

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 193, 304, 353, 386, 706, 772, 1412, 1544, 2824, 3088, 3667, 5648, 6707, 7334, 13414, 14668, 26828, 29336, 53656, 58672, 68129, 107312, 136258, 272516, 545032, 1090064, 1294451, 2588902, 5177804, 10355608, 20711216]

約数ペア:

[(1, 20711216), (2, 10355608), (4, 5177804), (8, 2588902), (16, 1294451), (19, 1090064), (38, 545032), (76, 272516), (152, 136258), (193, 107312), (304, 68129), (353, 58672), (386, 53656), (706, 29336), (772, 26828), (1412, 14668), (1544, 13414), (2824, 7334), (3088, 6707), (3667, 5648)]