81654021

素因数分解:

$3^3\times {\mathrm{139}}^1\times {\mathrm{21757}}^1$

素因数の和:21905

約数の個数: 16

約数和(自身を含む): 121844800

約数和(自身を除く): 40190779

約数列:

[1, 3, 9, 27, 139, 417, 1251, 3753, 21757, 65271, 195813, 587439, 3024223, 9072669, 27218007, 81654021]

約数ペア:

[(1, 81654021), (3, 27218007), (9, 9072669), (27, 3024223), (139, 587439), (417, 195813), (1251, 65271), (3753, 21757)]