20965730

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{23557}}^1$

素因数の和:23653

約数の個数: 16

約数和(自身を含む): 38163960

約数和(自身を除く): 17198230

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 23557, 47114, 117785, 235570, 2096573, 4193146, 10482865, 20965730]

約数ペア:

[(1, 20965730), (2, 10482865), (5, 4193146), (10, 2096573), (89, 235570), (178, 117785), (445, 47114), (890, 23557)]