21388623

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{353}}^1\times {\mathrm{1063}}^1$

素因数の和:1438

約数の個数: 16

約数和(自身を含む): 30132480

約数和(自身を除く): 8743857

約数列:

[1, 3, 19, 57, 353, 1059, 1063, 3189, 6707, 20121, 20197, 60591, 375239, 1125717, 7129541, 21388623]

約数ペア:

[(1, 21388623), (3, 7129541), (19, 1125717), (57, 375239), (353, 60591), (1059, 20197), (1063, 20121), (3189, 6707)]