20689072

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{11863}}^1$

素因数の和:11980

約数の個数: 20

約数和(自身を含む): 40456240

約数和(自身を除く): 19767168

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 872, 1744, 11863, 23726, 47452, 94904, 189808, 1293067, 2586134, 5172268, 10344536, 20689072]

約数ペア:

[(1, 20689072), (2, 10344536), (4, 5172268), (8, 2586134), (16, 1293067), (109, 189808), (218, 94904), (436, 47452), (872, 23726), (1744, 11863)]