21124389

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1201}}^1$

素因数の和:1269

約数の個数: 32

約数和(自身を含む): 33925248

約数和(自身を除く): 12800859

約数列:

[1, 3, 11, 13, 33, 39, 41, 123, 143, 429, 451, 533, 1201, 1353, 1599, 3603, 5863, 13211, 15613, 17589, 39633, 46839, 49241, 147723, 171743, 515229, 541651, 640133, 1624953, 1920399, 7041463, 21124389]

約数ペア:

[(1, 21124389), (3, 7041463), (11, 1920399), (13, 1624953), (33, 640133), (39, 541651), (41, 515229), (123, 171743), (143, 147723), (429, 49241), (451, 46839), (533, 39633), (1201, 17589), (1353, 15613), (1599, 13211), (3603, 5863)]