21311883

素因数分解:

$3^3\times {\mathrm{53}}^2\times {\mathrm{281}}^1$

素因数の和:396

約数の個数: 24

約数和(自身を含む): 32294640

約数和(自身を除く): 10982757

約数列:

[1, 3, 9, 27, 53, 159, 281, 477, 843, 1431, 2529, 2809, 7587, 8427, 14893, 25281, 44679, 75843, 134037, 402111, 789329, 2367987, 7103961, 21311883]

約数ペア:

[(1, 21311883), (3, 7103961), (9, 2367987), (27, 789329), (53, 402111), (159, 134037), (281, 75843), (477, 44679), (843, 25281), (1431, 14893), (2529, 8427), (2809, 7587)]