28397799

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{2339}}^1$

素因数の和:2435

約数の個数: 24

約数和(自身を含む): 43804800

約数和(自身を除く): 15407001

約数列:

[1, 3, 9, 19, 57, 71, 171, 213, 639, 1349, 2339, 4047, 7017, 12141, 21051, 44441, 133323, 166069, 399969, 498207, 1494621, 3155311, 9465933, 28397799]

約数ペア:

[(1, 28397799), (3, 9465933), (9, 3155311), (19, 1494621), (57, 498207), (71, 399969), (171, 166069), (213, 133323), (639, 44441), (1349, 21051), (2339, 12141), (4047, 7017)]