21089211

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1$

素因数の和:188

約数の個数: 48

約数和(自身を含む): 34409760

約数和(自身を除く): 13320549

約数列:

[1, 3, 11, 13, 33, 39, 41, 109, 121, 123, 143, 327, 363, 429, 451, 533, 1199, 1353, 1417, 1573, 1599, 3597, 4251, 4469, 4719, 4961, 5863, 13189, 13407, 14883, 15587, 17589, 39567, 46761, 49159, 58097, 64493, 147477, 171457, 174291, 193479, 514371, 540749, 639067, 1622247, 1917201, 7029737, 21089211]

約数ペア:

[(1, 21089211), (3, 7029737), (11, 1917201), (13, 1622247), (33, 639067), (39, 540749), (41, 514371), (109, 193479), (121, 174291), (123, 171457), (143, 147477), (327, 64493), (363, 58097), (429, 49159), (451, 46761), (533, 39567), (1199, 17589), (1353, 15587), (1417, 14883), (1573, 13407), (1599, 13189), (3597, 5863), (4251, 4961), (4469, 4719)]