20618213

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{7237}}^1$

素因数の和:7292

約数の個数: 16

約数和(自身を含む): 26404224

約数和(自身を除く): 5786011

約数列:

[1, 7, 11, 37, 77, 259, 407, 2849, 7237, 50659, 79607, 267769, 557249, 1874383, 2945459, 20618213]

約数ペア:

[(1, 20618213), (7, 2945459), (11, 1874383), (37, 557249), (77, 267769), (259, 79607), (407, 50659), (2849, 7237)]