81335457

素因数分解:

$3^2\times 7^1\times {\mathrm{677}}^1\times {\mathrm{1907}}^1$

素因数の和:2597

約数の個数: 24

約数和(自身を含む): 134536896

約数和(自身を除く): 53201439

約数列:

[1, 3, 7, 9, 21, 63, 677, 1907, 2031, 4739, 5721, 6093, 13349, 14217, 17163, 40047, 42651, 120141, 1291039, 3873117, 9037273, 11619351, 27111819, 81335457]

約数ペア:

[(1, 81335457), (3, 27111819), (7, 11619351), (9, 9037273), (21, 3873117), (63, 1291039), (677, 120141), (1907, 42651), (2031, 40047), (4739, 17163), (5721, 14217), (6093, 13349)]