28158057

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{419}}^1$

素因数の和:578

約数の個数: 32

約数和(自身を含む): 44352000

約数和(自身を除く): 16193943

約数列:

[1, 3, 9, 19, 27, 57, 131, 171, 393, 419, 513, 1179, 1257, 2489, 3537, 3771, 7467, 7961, 11313, 22401, 23883, 54889, 67203, 71649, 164667, 214947, 494001, 1042891, 1482003, 3128673, 9386019, 28158057]

約数ペア:

[(1, 28158057), (3, 9386019), (9, 3128673), (19, 1482003), (27, 1042891), (57, 494001), (131, 214947), (171, 164667), (393, 71649), (419, 67203), (513, 54889), (1179, 23883), (1257, 22401), (2489, 11313), (3537, 7961), (3771, 7467)]