128539887

素因数分解:

$3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{23633}}^1$

素因数の和:23687

約数の個数: 24

約数和(自身を含む): 204764976

約数和(自身を除く): 76225089

約数列:

[1, 3, 7, 21, 37, 49, 111, 147, 259, 777, 1813, 5439, 23633, 70899, 165431, 496293, 874421, 1158017, 2623263, 3474051, 6120947, 18362841, 42846629, 128539887]

約数ペア:

[(1, 128539887), (3, 42846629), (7, 18362841), (21, 6120947), (37, 3474051), (49, 2623263), (111, 1158017), (147, 874421), (259, 496293), (777, 165431), (1813, 70899), (5439, 23633)]