80785940

素因数分解:

$2^2\times 5^1\times {\mathrm{193}}^1\times {\mathrm{20929}}^1$

素因数の和:21131

約数の個数: 24

約数和(自身を含む): 170537640

約数和(自身を除く): 89751700

約数列:

[1, 2, 4, 5, 10, 20, 193, 386, 772, 965, 1930, 3860, 20929, 41858, 83716, 104645, 209290, 418580, 4039297, 8078594, 16157188, 20196485, 40392970, 80785940]

約数ペア:

[(1, 80785940), (2, 40392970), (4, 20196485), (5, 16157188), (10, 8078594), (20, 4039297), (193, 418580), (386, 209290), (772, 104645), (965, 83716), (1930, 41858), (3860, 20929)]