20985811

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{449}}^1\times {\mathrm{607}}^1$

素因数の和:1074

約数の個数: 16

約数和(自身を含む): 26265600

約数和(自身を除く): 5279789

約数列:

[1, 7, 11, 77, 449, 607, 3143, 4249, 4939, 6677, 34573, 46739, 272543, 1907801, 2997973, 20985811]

約数ペア:

[(1, 20985811), (7, 2997973), (11, 1907801), (77, 272543), (449, 46739), (607, 34573), (3143, 6677), (4249, 4939)]