21020055

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{200191}}^1$

素因数の和:200206

約数の個数: 16

約数和(自身を含む): 38436864

約数和(自身を除く): 17416809

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 200191, 600573, 1000955, 1401337, 3002865, 4204011, 7006685, 21020055]

約数ペア:

[(1, 21020055), (3, 7006685), (5, 4204011), (7, 3002865), (15, 1401337), (21, 1000955), (35, 600573), (105, 200191)]