20638448

素因数分解:

$2^4\times {\mathrm{83}}^1\times {\mathrm{15541}}^1$

素因数の和:15632

約数の個数: 20

約数和(自身を含む): 40471368

約数和(自身を除く): 19832920

約数列:

[1, 2, 4, 8, 16, 83, 166, 332, 664, 1328, 15541, 31082, 62164, 124328, 248656, 1289903, 2579806, 5159612, 10319224, 20638448]

約数ペア:

[(1, 20638448), (2, 10319224), (4, 5159612), (8, 2579806), (16, 1289903), (83, 248656), (166, 124328), (332, 62164), (664, 31082), (1328, 15541)]