18819591

素因数分解:

$3^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{6841}}^1$

素因数の和:6982

約数の個数: 16

約数和(自身を含む): 28900608

約数和(自身を除く): 10081017

約数列:

[1, 3, 7, 21, 131, 393, 917, 2751, 6841, 20523, 47887, 143661, 896171, 2688513, 6273197, 18819591]

約数ペア:

[(1, 18819591), (3, 6273197), (7, 2688513), (21, 896171), (131, 143661), (393, 47887), (917, 20523), (2751, 6841)]