19720274

素因数分解:

$2^1\times 7^1\times {\mathrm{661}}^1\times {\mathrm{2131}}^1$

素因数の和:2801

約数の個数: 16

約数和(自身を含む): 33873216

約数和(自身を除く): 14152942

約数列:

[1, 2, 7, 14, 661, 1322, 2131, 4262, 4627, 9254, 14917, 29834, 1408591, 2817182, 9860137, 19720274]

約数ペア:

[(1, 19720274), (2, 9860137), (7, 2817182), (14, 1408591), (661, 29834), (1322, 14917), (2131, 9254), (4262, 4627)]