21019965

素因数分解:

$3^1\times 5^1\times {\mathrm{719}}^1\times {\mathrm{1949}}^1$

素因数の和:2676

約数の個数: 16

約数和(自身を含む): 33696000

約数和(自身を除く): 12676035

約数列:

[1, 3, 5, 15, 719, 1949, 2157, 3595, 5847, 9745, 10785, 29235, 1401331, 4203993, 7006655, 21019965]

約数ペア:

[(1, 21019965), (3, 7006655), (5, 4203993), (15, 1401331), (719, 29235), (1949, 10785), (2157, 9745), (3595, 5847)]