20987834

素因数分解:

$2^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{25409}}^1$

素因数の和:25477

約数の個数: 16

約数和(自身を含む): 36590400

約数和(自身を除く): 15602566

約数列:

[1, 2, 7, 14, 59, 118, 413, 826, 25409, 50818, 177863, 355726, 1499131, 2998262, 10493917, 20987834]

約数ペア:

[(1, 20987834), (2, 10493917), (7, 2998262), (14, 1499131), (59, 355726), (118, 177863), (413, 50818), (826, 25409)]