18560420

素因数分解:

$2^2\times 5^1\times {\mathrm{409}}^1\times {\mathrm{2269}}^1$

素因数の和:2687

約数の個数: 24

約数和(自身を含む): 39089400

約数和(自身を除く): 20528980

約数列:

[1, 2, 4, 5, 10, 20, 409, 818, 1636, 2045, 2269, 4090, 4538, 8180, 9076, 11345, 22690, 45380, 928021, 1856042, 3712084, 4640105, 9280210, 18560420]

約数ペア:

[(1, 18560420), (2, 9280210), (4, 4640105), (5, 3712084), (10, 1856042), (20, 928021), (409, 45380), (818, 22690), (1636, 11345), (2045, 9076), (2269, 8180), (4090, 4538)]