21258710

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{193261}}^1$

素因数の和:193279

約数の個数: 16

約数和(自身を含む): 41744592

約数和(自身を除く): 20485882

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 193261, 386522, 966305, 1932610, 2125871, 4251742, 10629355, 21258710]

約数ペア:

[(1, 21258710), (2, 10629355), (5, 4251742), (10, 2125871), (11, 1932610), (22, 966305), (55, 386522), (110, 193261)]