216804987

素因数分解:

$3^2\times 7^1\times {\mathrm{509}}^1\times {\mathrm{6761}}^1$

素因数の和:7283

約数の個数: 24

約数和(自身を含む): 358656480

約数和(自身を除く): 141851493

約数列:

[1, 3, 7, 9, 21, 63, 509, 1527, 3563, 4581, 6761, 10689, 20283, 32067, 47327, 60849, 141981, 425943, 3441349, 10324047, 24089443, 30972141, 72268329, 216804987]

約数ペア:

[(1, 216804987), (3, 72268329), (7, 30972141), (9, 24089443), (21, 10324047), (63, 3441349), (509, 425943), (1527, 141981), (3563, 60849), (4581, 47327), (6761, 32067), (10689, 20283)]