20455981

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1889}}^1$

素因数の和:1933

約数の個数: 24

約数和(自身を含む): 27147960

約数和(自身を除く): 6691979

約数列:

[1, 7, 13, 17, 49, 91, 119, 221, 637, 833, 1547, 1889, 10829, 13223, 24557, 32113, 92561, 171899, 224791, 417469, 1203293, 1573537, 2922283, 20455981]

約数ペア:

[(1, 20455981), (7, 2922283), (13, 1573537), (17, 1203293), (49, 417469), (91, 224791), (119, 171899), (221, 92561), (637, 32113), (833, 24557), (1547, 13223), (1889, 10829)]