20997032

素因数分解:

$2^3\times 7^1\times {\mathrm{211}}^1\times {\mathrm{1777}}^1$

素因数の和:2001

約数の個数: 32

約数和(自身を含む): 45232320

約数和(自身を除く): 24235288

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 211, 422, 844, 1477, 1688, 1777, 2954, 3554, 5908, 7108, 11816, 12439, 14216, 24878, 49756, 99512, 374947, 749894, 1499788, 2624629, 2999576, 5249258, 10498516, 20997032]

約数ペア:

[(1, 20997032), (2, 10498516), (4, 5249258), (7, 2999576), (8, 2624629), (14, 1499788), (28, 749894), (56, 374947), (211, 99512), (422, 49756), (844, 24878), (1477, 14216), (1688, 12439), (1777, 11816), (2954, 7108), (3554, 5908)]