18438985

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{1471}}^1$

素因数の和:1608

約数の個数: 16

約数和(自身を含む): 23316480

約数和(自身を除く): 4877495

約数列:

[1, 5, 23, 109, 115, 545, 1471, 2507, 7355, 12535, 33833, 160339, 169165, 801695, 3687797, 18438985]

約数ペア:

[(1, 18438985), (5, 3687797), (23, 801695), (109, 169165), (115, 160339), (545, 33833), (1471, 12535), (2507, 7355)]