20109981

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{7877}}^1$

素因数の和:7940

約数の個数: 16

約数和(自身を含む): 28738944

約数和(自身を除く): 8628963

約数列:

[1, 3, 23, 37, 69, 111, 851, 2553, 7877, 23631, 181171, 291449, 543513, 874347, 6703327, 20109981]

約数ペア:

[(1, 20109981), (3, 6703327), (23, 874347), (37, 543513), (69, 291449), (111, 181171), (851, 23631), (2553, 7877)]