18950740

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{8693}}^1$

素因数の和:8811

約数の個数: 24

約数和(自身を含む): 40166280

約数和(自身を除く): 21215540

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 8693, 17386, 34772, 43465, 86930, 173860, 947537, 1895074, 3790148, 4737685, 9475370, 18950740]

約数ペア:

[(1, 18950740), (2, 9475370), (4, 4737685), (5, 3790148), (10, 1895074), (20, 947537), (109, 173860), (218, 86930), (436, 43465), (545, 34772), (1090, 17386), (2180, 8693)]