81212481

素因数分解:

$3^2\times 7^1\times {\mathrm{151}}^1\times {\mathrm{8537}}^1$

素因数の和:8701

約数の個数: 24

約数和(自身を含む): 134968704

約数和(自身を除く): 53756223

約数列:

[1, 3, 7, 9, 21, 63, 151, 453, 1057, 1359, 3171, 8537, 9513, 25611, 59759, 76833, 179277, 537831, 1289087, 3867261, 9023609, 11601783, 27070827, 81212481]

約数ペア:

[(1, 81212481), (3, 27070827), (7, 11601783), (9, 9023609), (21, 3867261), (63, 1289087), (151, 537831), (453, 179277), (1057, 76833), (1359, 59759), (3171, 25611), (8537, 9513)]