81756843

素因数分解:

$3^1\times 7^2\times {\mathrm{457}}^1\times {\mathrm{1217}}^1$

素因数の和:1691

約数の個数: 24

約数和(自身を含む): 127188432

約数和(自身を除く): 45431589

約数列:

[1, 3, 7, 21, 49, 147, 457, 1217, 1371, 3199, 3651, 8519, 9597, 22393, 25557, 59633, 67179, 178899, 556169, 1668507, 3893183, 11679549, 27252281, 81756843]

約数ペア:

[(1, 81756843), (3, 27252281), (7, 11679549), (21, 3893183), (49, 1668507), (147, 556169), (457, 178899), (1217, 67179), (1371, 59633), (3199, 25557), (3651, 22393), (8519, 9597)]