21379725

素因数分解:

$3^2\times 5^2\times {\mathrm{95021}}^1$

素因数の和:95037

約数の個数: 18

約数和(自身を含む): 38293866

約数和(自身を除く): 16914141

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 95021, 285063, 475105, 855189, 1425315, 2375525, 4275945, 7126575, 21379725]

約数ペア:

[(1, 21379725), (3, 7126575), (5, 4275945), (9, 2375525), (15, 1425315), (25, 855189), (45, 475105), (75, 285063), (225, 95021)]