21107405

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{359}}^1\times {\mathrm{1069}}^1$

素因数の和:1444

約数の個数: 16

約数和(自身を含む): 27734400

約数和(自身を除く): 6626995

約数列:

[1, 5, 11, 55, 359, 1069, 1795, 3949, 5345, 11759, 19745, 58795, 383771, 1918855, 4221481, 21107405]

約数ペア:

[(1, 21107405), (5, 4221481), (11, 1918855), (55, 383771), (359, 58795), (1069, 19745), (1795, 11759), (3949, 5345)]