21561155

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{56003}}^1$

素因数の和:56026

約数の個数: 16

約数和(自身を含む): 32258304

約数和(自身を除く): 10697149

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 56003, 280015, 392021, 616033, 1960105, 3080165, 4312231, 21561155]

約数ペア:

[(1, 21561155), (5, 4312231), (7, 3080165), (11, 1960105), (35, 616033), (55, 392021), (77, 280015), (385, 56003)]