20699728

素因数分解:

$2^4\times 7^1\times {\mathrm{421}}^1\times {\mathrm{439}}^1$

素因数の和:875

約数の個数: 40

約数和(自身を含む): 46048640

約数和(自身を除く): 25348912

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 421, 439, 842, 878, 1684, 1756, 2947, 3073, 3368, 3512, 5894, 6146, 6736, 7024, 11788, 12292, 23576, 24584, 47152, 49168, 184819, 369638, 739276, 1293733, 1478552, 2587466, 2957104, 5174932, 10349864, 20699728]

約数ペア:

[(1, 20699728), (2, 10349864), (4, 5174932), (7, 2957104), (8, 2587466), (14, 1478552), (16, 1293733), (28, 739276), (56, 369638), (112, 184819), (421, 49168), (439, 47152), (842, 24584), (878, 23576), (1684, 12292), (1756, 11788), (2947, 7024), (3073, 6736), (3368, 6146), (3512, 5894)]