20690525

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1013}}^1$

素因数の和:1085

約数の個数: 24

約数和(自身を含む): 27661920

約数和(自身を除く): 6971395

約数列:

[1, 5, 19, 25, 43, 95, 215, 475, 817, 1013, 1075, 4085, 5065, 19247, 20425, 25325, 43559, 96235, 217795, 481175, 827621, 1088975, 4138105, 20690525]

約数ペア:

[(1, 20690525), (5, 4138105), (19, 1088975), (25, 827621), (43, 481175), (95, 217795), (215, 96235), (475, 43559), (817, 25325), (1013, 20425), (1075, 19247), (4085, 5065)]