51691689

素因数分解:

$3^5\times 7^1\times {\mathrm{30389}}^1$

素因数の和:30411

約数の個数: 24

約数和(自身を含む): 88495680

約数和(自身を除く): 36803991

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 1701, 30389, 91167, 212723, 273501, 638169, 820503, 1914507, 2461509, 5743521, 7384527, 17230563, 51691689]

約数ペア:

[(1, 51691689), (3, 17230563), (7, 7384527), (9, 5743521), (21, 2461509), (27, 1914507), (63, 820503), (81, 638169), (189, 273501), (243, 212723), (567, 91167), (1701, 30389)]