20855276

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{30851}}^1$

素因数の和:30881

約数の個数: 18

約数和(自身を含む): 39521412

約数和(自身を除く): 18666136

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 30851, 61702, 123404, 401063, 802126, 1604252, 5213819, 10427638, 20855276]

約数ペア:

[(1, 20855276), (2, 10427638), (4, 5213819), (13, 1604252), (26, 802126), (52, 401063), (169, 123404), (338, 61702), (676, 30851)]