20685945

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{197009}}^1$

素因数の和:197024

約数の個数: 16

約数和(自身を含む): 37825920

約数和(自身を除く): 17139975

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 197009, 591027, 985045, 1379063, 2955135, 4137189, 6895315, 20685945]

約数ペア:

[(1, 20685945), (3, 6895315), (5, 4137189), (7, 2955135), (15, 1379063), (21, 985045), (35, 591027), (105, 197009)]