21421688

素因数分解:

$2^3\times {\mathrm{661}}^1\times {\mathrm{4051}}^1$

素因数の和:4718

約数の個数: 16

約数和(自身を含む): 40236360

約数和(自身を除く): 18814672

約数列:

[1, 2, 4, 8, 661, 1322, 2644, 4051, 5288, 8102, 16204, 32408, 2677711, 5355422, 10710844, 21421688]

約数ペア:

[(1, 21421688), (2, 10710844), (4, 5355422), (8, 2677711), (661, 32408), (1322, 16204), (2644, 8102), (4051, 5288)]