21129997

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{4799}}^1$

素因数の和:4860

約数の個数: 16

約数和(自身を含む): 26265600

約数和(自身を除く): 5135603

約数列:

[1, 7, 17, 37, 119, 259, 629, 4403, 4799, 33593, 81583, 177563, 571081, 1242941, 3018571, 21129997]

約数ペア:

[(1, 21129997), (7, 3018571), (17, 1242941), (37, 571081), (119, 177563), (259, 81583), (629, 33593), (4403, 4799)]