138985

素因数分解:

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

素因数の和:61

約数の個数: 24

約数和(自身を含む): 219456

約数和(自身を除く): 80471

約数列:

[1, 5, 7, 11, 19, 35, 55, 77, 95, 133, 209, 361, 385, 665, 1045, 1463, 1805, 2527, 3971, 7315, 12635, 19855, 27797, 138985]

約数ペア:

[(1, 138985), (5, 27797), (7, 19855), (11, 12635), (19, 7315), (35, 3971), (55, 2527), (77, 1805), (95, 1463), (133, 1045), (209, 665), (361, 385)]