21441.0000000

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{4729}}^1$

素因数の和:4811

約数の個数: 24

約数和(自身を含む): 14700840

約数和(自身を除く): 7796500

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 4729, 9458, 18916, 23645, 47290, 94580, 345217, 690434, 1380868, 1726085, 3452170, 6904340]

約数ペア:

[(1, 6904340), (2, 3452170), (4, 1726085), (5, 1380868), (10, 690434), (20, 345217), (73, 94580), (146, 47290), (292, 23645), (365, 18916), (730, 9458), (1460, 4729)]