21238585

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{2063}}^1$

素因数の和:2168

約数の個数: 16

約数和(自身を含む): 26749440

約数和(自身を除く): 5510855

約数列:

[1, 5, 29, 71, 145, 355, 2059, 2063, 10295, 10315, 59827, 146473, 299135, 732365, 4247717, 21238585]

約数ペア:

[(1, 21238585), (5, 4247717), (29, 732365), (71, 299135), (145, 146473), (355, 59827), (2059, 10315), (2063, 10295)]