80209840

素因数分解:

$2^4\times 5^1\times {\mathrm{1002623}}^1$

素因数の和:1002636

約数の個数: 20

約数和(自身を含む): 186488064

約数和(自身を除く): 106278224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1002623, 2005246, 4010492, 5013115, 8020984, 10026230, 16041968, 20052460, 40104920, 80209840]

約数ペア:

[(1, 80209840), (2, 40104920), (4, 20052460), (5, 16041968), (8, 10026230), (10, 8020984), (16, 5013115), (20, 4010492), (40, 2005246), (80, 1002623)]