28721601

素因数分解:

$3^3\times {\mathrm{53}}^1\times {\mathrm{20071}}^1$

素因数の和:20133

約数の個数: 16

約数和(自身を含む): 43355520

約数和(自身を除く): 14633919

約数列:

[1, 3, 9, 27, 53, 159, 477, 1431, 20071, 60213, 180639, 541917, 1063763, 3191289, 9573867, 28721601]

約数ペア:

[(1, 28721601), (3, 9573867), (9, 3191289), (27, 1063763), (53, 541917), (159, 180639), (477, 60213), (1431, 20071)]