20681955

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{65657}}^1$

素因数の和:65675

約数の個数: 24

約数和(自身を含む): 40970592

約数和(自身を除く): 20288637

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 65657, 196971, 328285, 459599, 590913, 984855, 1378797, 2297995, 2954565, 4136391, 6893985, 20681955]

約数ペア:

[(1, 20681955), (3, 6893985), (5, 4136391), (7, 2954565), (9, 2297995), (15, 1378797), (21, 984855), (35, 590913), (45, 459599), (63, 328285), (105, 196971), (315, 65657)]