18561940

素因数分解:

$2^2\times 5^1\times {\mathrm{928097}}^1$

素因数の和:928106

約数の個数: 12

約数和(自身を含む): 38980116

約数和(自身を除く): 20418176

約数列:

[1, 2, 4, 5, 10, 20, 928097, 1856194, 3712388, 4640485, 9280970, 18561940]

約数ペア:

[(1, 18561940), (2, 9280970), (4, 4640485), (5, 3712388), (10, 1856194), (20, 928097)]