51205

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1$

素因数の和:49

約数の個数: 24

約数和(自身を含む): 82080

約数和(自身を除く): 30875

約数列:

[1, 5, 7, 11, 19, 35, 49, 55, 77, 95, 133, 209, 245, 385, 539, 665, 931, 1045, 1463, 2695, 4655, 7315, 10241, 51205]

約数ペア:

[(1, 51205), (5, 10241), (7, 7315), (11, 4655), (19, 2695), (35, 1463), (49, 1045), (55, 931), (77, 665), (95, 539), (133, 385), (209, 245)]