21225981

素因数分解:

$3^1\times 7^1\times {\mathrm{677}}^1\times {\mathrm{1493}}^1$

素因数の和:2180

約数の個数: 16

約数和(自身を含む): 32413824

約数和(自身を除く): 11187843

約数列:

[1, 3, 7, 21, 677, 1493, 2031, 4479, 4739, 10451, 14217, 31353, 1010761, 3032283, 7075327, 21225981]

約数ペア:

[(1, 21225981), (3, 7075327), (7, 3032283), (21, 1010761), (677, 31353), (1493, 14217), (2031, 10451), (4479, 4739)]