21828255

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{85601}}^1$

素因数の和:85626

約数の個数: 16

約数和(自身を含む): 36980064

約数和(自身を除く): 15151809

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 85601, 256803, 428005, 1284015, 1455217, 4365651, 7276085, 21828255]

約数ペア:

[(1, 21828255), (3, 7276085), (5, 4365651), (15, 1455217), (17, 1284015), (51, 428005), (85, 256803), (255, 85601)]