20779018

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{401}}^1\times {\mathrm{1993}}^1$

素因数の和:2409

約数の個数: 16

約数和(自身を含む): 33666696

約数和(自身を除く): 12887678

約数列:

[1, 2, 13, 26, 401, 802, 1993, 3986, 5213, 10426, 25909, 51818, 799193, 1598386, 10389509, 20779018]

約数ペア:

[(1, 20779018), (2, 10389509), (13, 1598386), (26, 799193), (401, 51818), (802, 25909), (1993, 10426), (3986, 5213)]