55721439

素因数分解:

$3^4\times {\mathrm{71}}^1\times {\mathrm{9689}}^1$

素因数の和:9772

約数の個数: 20

約数和(自身を含む): 84419280

約数和(自身を除く): 28697841

約数列:

[1, 3, 9, 27, 71, 81, 213, 639, 1917, 5751, 9689, 29067, 87201, 261603, 687919, 784809, 2063757, 6191271, 18573813, 55721439]

約数ペア:

[(1, 55721439), (3, 18573813), (9, 6191271), (27, 2063757), (71, 784809), (81, 687919), (213, 261603), (639, 87201), (1917, 29067), (5751, 9689)]