21039189951

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{4247767}}^1$

素因数の和:4247910

約数の個数: 16

約数和(自身を含む): 30448001024

約数和(自身を除く): 9408811073

約数列:

[1, 3, 13, 39, 127, 381, 1651, 4953, 4247767, 12743301, 55220971, 165662913, 539466409, 1618399227, 7013063317, 21039189951]

約数ペア:

[(1, 21039189951), (3, 7013063317), (13, 1618399227), (39, 539466409), (127, 165662913), (381, 55220971), (1651, 12743301), (4953, 4247767)]