21309656

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{37517}}^1$

素因数の和:37594

約数の個数: 16

約数和(自身を含む): 40519440

約数和(自身を除く): 19209784

約数列:

[1, 2, 4, 8, 71, 142, 284, 568, 37517, 75034, 150068, 300136, 2663707, 5327414, 10654828, 21309656]

約数ペア:

[(1, 21309656), (2, 10654828), (4, 5327414), (8, 2663707), (71, 300136), (142, 150068), (284, 75034), (568, 37517)]