21088155

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{127807}}^1$

素因数の和:127826

約数の個数: 16

約数和(自身を含む): 36808704

約数和(自身を除く): 15720549

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 127807, 383421, 639035, 1405877, 1917105, 4217631, 7029385, 21088155]

約数ペア:

[(1, 21088155), (3, 7029385), (5, 4217631), (11, 1917105), (15, 1405877), (33, 639035), (55, 383421), (165, 127807)]