21660268

素因数分解:

$2^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{10597}}^1$

素因数の和:10681

約数の個数: 24

約数和(自身を含む): 43918112

約数和(自身を除く): 22257844

約数列:

[1, 2, 4, 7, 14, 28, 73, 146, 292, 511, 1022, 2044, 10597, 21194, 42388, 74179, 148358, 296716, 773581, 1547162, 3094324, 5415067, 10830134, 21660268]

約数ペア:

[(1, 21660268), (2, 10830134), (4, 5415067), (7, 3094324), (14, 1547162), (28, 773581), (73, 296716), (146, 148358), (292, 74179), (511, 42388), (1022, 21194), (2044, 10597)]