18837380

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{8641}}^1$

素因数の和:8759

約数の個数: 24

約数和(自身を含む): 39926040

約数和(自身を除く): 21088660

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 8641, 17282, 34564, 43205, 86410, 172820, 941869, 1883738, 3767476, 4709345, 9418690, 18837380]

約数ペア:

[(1, 18837380), (2, 9418690), (4, 4709345), (5, 3767476), (10, 1883738), (20, 941869), (109, 172820), (218, 86410), (436, 43205), (545, 34564), (1090, 17282), (2180, 8641)]