20982843

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4691}}^1$

素因数の和:4775

約数の個数: 24

約数和(自身を含む): 35133696

約数和(自身を除く): 14150853

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4473, 4691, 14073, 32837, 42219, 98511, 295533, 333061, 999183, 2331427, 2997549, 6994281, 20982843]

約数ペア:

[(1, 20982843), (3, 6994281), (7, 2997549), (9, 2331427), (21, 999183), (63, 333061), (71, 295533), (213, 98511), (497, 42219), (639, 32837), (1491, 14073), (4473, 4691)]