20418867

素因数分解:

$3^2\times 7^1\times {\mathrm{101}}^1\times {\mathrm{3209}}^1$

素因数の和:3323

約数の個数: 24

約数和(自身を含む): 34051680

約数和(自身を除く): 13632813

約数列:

[1, 3, 7, 9, 21, 63, 101, 303, 707, 909, 2121, 3209, 6363, 9627, 22463, 28881, 67389, 202167, 324109, 972327, 2268763, 2916981, 6806289, 20418867]

約数ペア:

[(1, 20418867), (3, 6806289), (7, 2916981), (9, 2268763), (21, 972327), (63, 324109), (101, 202167), (303, 67389), (707, 28881), (909, 22463), (2121, 9627), (3209, 6363)]