19988432

素因数分解:

$2^4\times {\mathrm{257}}^1\times {\mathrm{4861}}^1$

素因数の和:5126

約数の個数: 20

約数和(自身を含む): 38886276

約数和(自身を除く): 18897844

約数列:

[1, 2, 4, 8, 16, 257, 514, 1028, 2056, 4112, 4861, 9722, 19444, 38888, 77776, 1249277, 2498554, 4997108, 9994216, 19988432]

約数ペア:

[(1, 19988432), (2, 9994216), (4, 4997108), (8, 2498554), (16, 1249277), (257, 77776), (514, 38888), (1028, 19444), (2056, 9722), (4112, 4861)]