21658023

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{5689}}^1$

素因数の和:5748

約数の個数: 20

約数和(自身を含む): 33047520

約数和(自身を除く): 11389497

約数列:

[1, 3, 9, 27, 47, 81, 141, 423, 1269, 3807, 5689, 17067, 51201, 153603, 267383, 460809, 802149, 2406447, 7219341, 21658023]

約数ペア:

[(1, 21658023), (3, 7219341), (9, 2406447), (27, 802149), (47, 460809), (81, 267383), (141, 153603), (423, 51201), (1269, 17067), (3807, 5689)]