19785940

素因数分解:

$2^2\times 5^1\times {\mathrm{347}}^1\times {\mathrm{2851}}^1$

素因数の和:3207

約数の個数: 24

約数和(自身を含む): 41684832

約数和(自身を除く): 21898892

約数列:

[1, 2, 4, 5, 10, 20, 347, 694, 1388, 1735, 2851, 3470, 5702, 6940, 11404, 14255, 28510, 57020, 989297, 1978594, 3957188, 4946485, 9892970, 19785940]

約数ペア:

[(1, 19785940), (2, 9892970), (4, 4946485), (5, 3957188), (10, 1978594), (20, 989297), (347, 57020), (694, 28510), (1388, 14255), (1735, 11404), (2851, 6940), (3470, 5702)]