28181680

素因数分解:

$2^4\times 5^1\times {\mathrm{352271}}^1$

素因数の和:352284

約数の個数: 20

約数和(自身を含む): 65522592

約数和(自身を除く): 37340912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 352271, 704542, 1409084, 1761355, 2818168, 3522710, 5636336, 7045420, 14090840, 28181680]

約数ペア:

[(1, 28181680), (2, 14090840), (4, 7045420), (5, 5636336), (8, 3522710), (10, 2818168), (16, 1761355), (20, 1409084), (40, 704542), (80, 352271)]