840020

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{433}}^1$

素因数の和:539

約数の個数: 24

約数和(自身を含む): 1786344

約数和(自身を除く): 946324

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 433, 485, 866, 970, 1732, 1940, 2165, 4330, 8660, 42001, 84002, 168004, 210005, 420010, 840020]

約数ペア:

[(1, 840020), (2, 420010), (4, 210005), (5, 168004), (10, 84002), (20, 42001), (97, 8660), (194, 4330), (388, 2165), (433, 1940), (485, 1732), (866, 970)]