20890681

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{1021}}^1$

素因数の和:1144

約数の個数: 16

約数和(自身を含む): 24855040

約数和(自身を除く): 3964359

約数列:

[1, 7, 37, 79, 259, 553, 1021, 2923, 7147, 20461, 37777, 80659, 264439, 564613, 2984383, 20890681]

約数ペア:

[(1, 20890681), (7, 2984383), (37, 564613), (79, 264439), (259, 80659), (553, 37777), (1021, 20461), (2923, 7147)]