20569516

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{42499}}^1$

素因数の和:42525

約数の個数: 18

約数和(自身を含む): 39567500

約数和(自身を除く): 18997984

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 42499, 84998, 169996, 467489, 934978, 1869956, 5142379, 10284758, 20569516]

約数ペア:

[(1, 20569516), (2, 10284758), (4, 5142379), (11, 1869956), (22, 934978), (44, 467489), (121, 169996), (242, 84998), (484, 42499)]