21142593

素因数分解:

$3^3\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{269}}^1$

素因数の和:390

約数の個数: 32

約数和(自身を含む): 32659200

約数和(自身を除く): 11516607

約数列:

[1, 3, 9, 27, 41, 71, 123, 213, 269, 369, 639, 807, 1107, 1917, 2421, 2911, 7263, 8733, 11029, 19099, 26199, 33087, 57297, 78597, 99261, 171891, 297783, 515673, 783059, 2349177, 7047531, 21142593]

約数ペア:

[(1, 21142593), (3, 7047531), (9, 2349177), (27, 783059), (41, 515673), (71, 297783), (123, 171891), (213, 99261), (269, 78597), (369, 57297), (639, 33087), (807, 26199), (1107, 19099), (1917, 11029), (2421, 8733), (2911, 7263)]