21116955

素因数分解:

$3^1\times 5^1\times {\mathrm{317}}^1\times {\mathrm{4441}}^1$

素因数の和:4766

約数の個数: 16

約数和(自身を含む): 33901344

約数和(自身を除く): 12784389

約数列:

[1, 3, 5, 15, 317, 951, 1585, 4441, 4755, 13323, 22205, 66615, 1407797, 4223391, 7038985, 21116955]

約数ペア:

[(1, 21116955), (3, 7038985), (5, 4223391), (15, 1407797), (317, 66615), (951, 22205), (1585, 13323), (4441, 4755)]