18915663658

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{419}}^1\times {\mathrm{317921}}^1$

素因数の和:318413

約数の個数: 16

約数和(自身を含む): 28841883840

約数和(自身を除く): 9926220182

約数列:

[1, 2, 71, 142, 419, 838, 29749, 59498, 317921, 635842, 22572391, 45144782, 133208899, 266417798, 9457831829, 18915663658]

約数ペア:

[(1, 18915663658), (2, 9457831829), (71, 266417798), (142, 133208899), (419, 45144782), (838, 22572391), (29749, 635842), (59498, 317921)]