81645147

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{20759}}^1$

素因数の和:20807

約数の個数: 24

約数和(自身を含む): 129542400

約数和(自身を除く): 47897253

約数列:

[1, 3, 9, 19, 23, 57, 69, 171, 207, 437, 1311, 3933, 20759, 62277, 186831, 394421, 477457, 1183263, 1432371, 3549789, 4297113, 9071683, 27215049, 81645147]

約数ペア:

[(1, 81645147), (3, 27215049), (9, 9071683), (19, 4297113), (23, 3549789), (57, 1432371), (69, 1183263), (171, 477457), (207, 394421), (437, 186831), (1311, 62277), (3933, 20759)]