21078945

素因数分解:

$3^2\times 5^1\times {\mathrm{468421}}^1$

素因数の和:468432

約数の個数: 12

約数和(自身を含む): 36536916

約数和(自身を除く): 15457971

約数列:

[1, 3, 5, 9, 15, 45, 468421, 1405263, 2342105, 4215789, 7026315, 21078945]

約数ペア:

[(1, 21078945), (3, 7026315), (5, 4215789), (9, 2342105), (15, 1405263), (45, 468421)]