19999755

素因数分解:

$3^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{1993}}^1$

素因数の和:2227

約数の個数: 24

約数和(自身を含む): 34839168

約数和(自身を除く): 14839413

約数列:

[1, 3, 5, 9, 15, 45, 223, 669, 1115, 1993, 2007, 3345, 5979, 9965, 10035, 17937, 29895, 89685, 444439, 1333317, 2222195, 3999951, 6666585, 19999755]

約数ペア:

[(1, 19999755), (3, 6666585), (5, 3999951), (9, 2222195), (15, 1333317), (45, 444439), (223, 89685), (669, 29895), (1115, 17937), (1993, 10035), (2007, 9965), (3345, 5979)]