20911850

素因数分解:

$2^1\times 5^2\times {\mathrm{83}}^1\times {\mathrm{5039}}^1$

素因数の和:5134

約数の個数: 24

約数和(自身を含む): 39372480

約数和(自身を除く): 18460630

約数列:

[1, 2, 5, 10, 25, 50, 83, 166, 415, 830, 2075, 4150, 5039, 10078, 25195, 50390, 125975, 251950, 418237, 836474, 2091185, 4182370, 10455925, 20911850]

約数ペア:

[(1, 20911850), (2, 10455925), (5, 4182370), (10, 2091185), (25, 836474), (50, 418237), (83, 251950), (166, 125975), (415, 50390), (830, 25195), (2075, 10078), (4150, 5039)]