21612040

素因数分解:

$2^3\times 5^1\times {\mathrm{540301}}^1$

素因数の和:540312

約数の個数: 16

約数和(自身を含む): 48627180

約数和(自身を除く): 27015140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 540301, 1080602, 2161204, 2701505, 4322408, 5403010, 10806020, 21612040]

約数ペア:

[(1, 21612040), (2, 10806020), (4, 5403010), (5, 4322408), (8, 2701505), (10, 2161204), (20, 1080602), (40, 540301)]