21643215

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{131171}}^1$

素因数の和:131190

約数の個数: 16

約数和(自身を含む): 37777536

約数和(自身を除く): 16134321

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 131171, 393513, 655855, 1442881, 1967565, 4328643, 7214405, 21643215]

約数ペア:

[(1, 21643215), (3, 7214405), (5, 4328643), (11, 1967565), (15, 1442881), (33, 655855), (55, 393513), (165, 131171)]