20563940

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{9433}}^1$

素因数の和:9551

約数の個数: 24

約数和(自身を含む): 43585080

約数和(自身を除く): 23021140

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 9433, 18866, 37732, 47165, 94330, 188660, 1028197, 2056394, 4112788, 5140985, 10281970, 20563940]

約数ペア:

[(1, 20563940), (2, 10281970), (4, 5140985), (5, 4112788), (10, 2056394), (20, 1028197), (109, 188660), (218, 94330), (436, 47165), (545, 37732), (1090, 18866), (2180, 9433)]