81440891

素因数分解:

$7^3\times {\mathrm{283}}^1\times {\mathrm{839}}^1$

素因数の和:1143

約数の個数: 16

約数和(自身を含む): 95424000

約数和(自身を除く): 13983109

約数列:

[1, 7, 49, 283, 343, 839, 1981, 5873, 13867, 41111, 97069, 237437, 287777, 1662059, 11634413, 81440891]

約数ペア:

[(1, 81440891), (7, 11634413), (49, 1662059), (283, 287777), (343, 237437), (839, 97069), (1981, 41111), (5873, 13867)]