20907387

素因数分解:

$3^2\times {\mathrm{53}}^2\times {\mathrm{827}}^1$

素因数の和:939

約数の個数: 18

約数和(自身を含む): 30817332

約数和(自身を除く): 9909945

約数列:

[1, 3, 9, 53, 159, 477, 827, 2481, 2809, 7443, 8427, 25281, 43831, 131493, 394479, 2323043, 6969129, 20907387]

約数ペア:

[(1, 20907387), (3, 6969129), (9, 2323043), (53, 394479), (159, 131493), (477, 43831), (827, 25281), (2481, 8427), (2809, 7443)]