21295385

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{223}}^1\times {\mathrm{269}}^1$

素因数の和:568

約数の個数: 16

約数和(自身を含む): 26127360

約数和(自身を除く): 4831975

約数列:

[1, 5, 71, 223, 269, 355, 1115, 1345, 15833, 19099, 59987, 79165, 95495, 299935, 4259077, 21295385]

約数ペア:

[(1, 21295385), (5, 4259077), (71, 299935), (223, 95495), (269, 79165), (355, 59987), (1115, 19099), (1345, 15833)]