81561395

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{401}}^1\times {\mathrm{2141}}^1$

素因数の和:2566

約数の個数: 16

約数和(自身を含む): 103330080

約数和(自身を除く): 21768685

約数列:

[1, 5, 19, 95, 401, 2005, 2141, 7619, 10705, 38095, 40679, 203395, 858541, 4292705, 16312279, 81561395]

約数ペア:

[(1, 81561395), (5, 16312279), (19, 4292705), (95, 858541), (401, 203395), (2005, 40679), (2141, 38095), (7619, 10705)]