20555661

素因数分解:

$3^1\times 7^1\times {\mathrm{401}}^1\times {\mathrm{2441}}^1$

素因数の和:2852

約数の個数: 16

約数和(自身を含む): 31413888

約数和(自身を除く): 10858227

約数列:

[1, 3, 7, 21, 401, 1203, 2441, 2807, 7323, 8421, 17087, 51261, 978841, 2936523, 6851887, 20555661]

約数ペア:

[(1, 20555661), (3, 6851887), (7, 2936523), (21, 978841), (401, 51261), (1203, 17087), (2441, 8421), (2807, 7323)]