20565940

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{10601}}^1$

素因数の和:10707

約数の個数: 24

約数和(自身を含む): 43637832

約数和(自身を除く): 23071892

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 10601, 21202, 42404, 53005, 106010, 212020, 1028297, 2056594, 4113188, 5141485, 10282970, 20565940]

約数ペア:

[(1, 20565940), (2, 10282970), (4, 5141485), (5, 4113188), (10, 2056594), (20, 1028297), (97, 212020), (194, 106010), (388, 53005), (485, 42404), (970, 21202), (1940, 10601)]