21606729

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{487}}^1\times {\mathrm{643}}^1$

素因数の和:1156

約数の個数: 16

約数和(自身を含む): 30170112

約数和(自身を除く): 8563383

約数列:

[1, 3, 23, 69, 487, 643, 1461, 1929, 11201, 14789, 33603, 44367, 313141, 939423, 7202243, 21606729]

約数ペア:

[(1, 21606729), (3, 7202243), (23, 939423), (69, 313141), (487, 44367), (643, 33603), (1461, 14789), (1929, 11201)]