21530383

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{1583}}^1$

素因数の和:1686

約数の個数: 16

約数和(自身を含む): 25850880

約数和(自身を除く): 4320497

約数列:

[1, 7, 29, 67, 203, 469, 1583, 1943, 11081, 13601, 45907, 106061, 321349, 742427, 3075769, 21530383]

約数ペア:

[(1, 21530383), (7, 3075769), (29, 742427), (67, 321349), (203, 106061), (469, 45907), (1583, 13601), (1943, 11081)]