20395820

素因数分解:

$2^2\times 5^1\times {\mathrm{479}}^1\times {\mathrm{2129}}^1$

素因数の和:2617

約数の個数: 24

約数和(自身を含む): 42940800

約数和(自身を除く): 22544980

約数列:

[1, 2, 4, 5, 10, 20, 479, 958, 1916, 2129, 2395, 4258, 4790, 8516, 9580, 10645, 21290, 42580, 1019791, 2039582, 4079164, 5098955, 10197910, 20395820]

約数ペア:

[(1, 20395820), (2, 10197910), (4, 5098955), (5, 4079164), (10, 2039582), (20, 1019791), (479, 42580), (958, 21290), (1916, 10645), (2129, 9580), (2395, 8516), (4258, 4790)]