19605940

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{13807}}^1$

素因数の和:13887

約数の個数: 24

約数和(自身を含む): 41755392

約数和(自身を除く): 22149452

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 13807, 27614, 55228, 69035, 138070, 276140, 980297, 1960594, 3921188, 4901485, 9802970, 19605940]

約数ペア:

[(1, 19605940), (2, 9802970), (4, 4901485), (5, 3921188), (10, 1960594), (20, 980297), (71, 276140), (142, 138070), (284, 69035), (355, 55228), (710, 27614), (1420, 13807)]