21841729

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{499}}^1$

素因数の和:569

約数の個数: 24

約数和(自身を含む): 27816000

約数和(自身を除く): 5974271

約数列:

[1, 7, 13, 37, 91, 169, 259, 481, 499, 1183, 3367, 3493, 6253, 6487, 18463, 43771, 45409, 84331, 129241, 240019, 590317, 1680133, 3120247, 21841729]

約数ペア:

[(1, 21841729), (7, 3120247), (13, 1680133), (37, 590317), (91, 240019), (169, 129241), (259, 84331), (481, 45409), (499, 43771), (1183, 18463), (3367, 6487), (3493, 6253)]