20853553

素因数分解:

$7^1\times {\mathrm{109}}^1\times {\mathrm{151}}^1\times {\mathrm{181}}^1$

素因数の和:448

約数の個数: 16

約数和(自身を含む): 24344320

約数和(自身を除く): 3490767

約数列:

[1, 7, 109, 151, 181, 763, 1057, 1267, 16459, 19729, 27331, 115213, 138103, 191317, 2979079, 20853553]

約数ペア:

[(1, 20853553), (7, 2979079), (109, 191317), (151, 138103), (181, 115213), (763, 27331), (1057, 19729), (1267, 16459)]