20210872779

素因数分解:

$3^2\times {\mathrm{401}}^1\times {\mathrm{5600131}}^1$

素因数の和:5600538

約数の個数: 12

約数和(自身を含む): 29266289832

約数和(自身を除く): 9055417053

約数列:

[1, 3, 9, 401, 1203, 3609, 5600131, 16800393, 50401179, 2245652531, 6736957593, 20210872779]

約数ペア:

[(1, 20210872779), (3, 6736957593), (9, 2245652531), (401, 50401179), (1203, 16800393), (3609, 5600131)]