21000604821

素因数分解:

$3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{181}}^1\times {\mathrm{82463}}^1$

素因数の和:82721

約数の個数: 32

約数和(自身を含む): 32658382848

約数和(自身を除く): 11657778027

約数列:

[1, 3, 7, 21, 67, 181, 201, 469, 543, 1267, 1407, 3801, 12127, 36381, 82463, 84889, 247389, 254667, 577241, 1731723, 5525021, 14925803, 16575063, 38675147, 44777409, 104480621, 116025441, 313441863, 1000028801, 3000086403, 7000201607, 21000604821]

約数ペア:

[(1, 21000604821), (3, 7000201607), (7, 3000086403), (21, 1000028801), (67, 313441863), (181, 116025441), (201, 104480621), (469, 44777409), (543, 38675147), (1267, 16575063), (1407, 14925803), (3801, 5525021), (12127, 1731723), (36381, 577241), (82463, 254667), (84889, 247389)]