21003741

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{4003}}^1$

素因数の和:4073

約数の個数: 24

約数和(自身を含む): 33729696

約数和(自身を除く): 12725955

約数列:

[1, 3, 9, 11, 33, 53, 99, 159, 477, 583, 1749, 4003, 5247, 12009, 36027, 44033, 132099, 212159, 396297, 636477, 1909431, 2333749, 7001247, 21003741]

約数ペア:

[(1, 21003741), (3, 7001247), (9, 2333749), (11, 1909431), (33, 636477), (53, 396297), (99, 212159), (159, 132099), (477, 44033), (583, 36027), (1749, 12009), (4003, 5247)]