21894040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{78193}}^1$

素因数の和:78211

約数の個数: 32

約数和(自身を含む): 56299680

約数和(自身を除く): 34405640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 78193, 156386, 312772, 390965, 547351, 625544, 781930, 1094702, 1563860, 2189404, 2736755, 3127720, 4378808, 5473510, 10947020, 21894040]

約数ペア:

[(1, 21894040), (2, 10947020), (4, 5473510), (5, 4378808), (7, 3127720), (8, 2736755), (10, 2189404), (14, 1563860), (20, 1094702), (28, 781930), (35, 625544), (40, 547351), (56, 390965), (70, 312772), (140, 156386), (280, 78193)]