81689391

素因数分解:

$3^4\times 7^1\times {\mathrm{144073}}^1$

素因数の和:144092

約数の個数: 20

約数和(自身を含む): 139463632

約数和(自身を除く): 57774241

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 144073, 432219, 1008511, 1296657, 3025533, 3889971, 9076599, 11669913, 27229797, 81689391]

約数ペア:

[(1, 81689391), (3, 27229797), (7, 11669913), (9, 9076599), (21, 3889971), (27, 3025533), (63, 1296657), (81, 1008511), (189, 432219), (567, 144073)]