20218905

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{64187}}^1$

素因数の和:64205

約数の個数: 24

約数和(自身を含む): 40053312

約数和(自身を除く): 19834407

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 64187, 192561, 320935, 449309, 577683, 962805, 1347927, 2246545, 2888415, 4043781, 6739635, 20218905]

約数ペア:

[(1, 20218905), (3, 6739635), (5, 4043781), (7, 2888415), (9, 2246545), (15, 1347927), (21, 962805), (35, 577683), (45, 449309), (63, 320935), (105, 192561), (315, 64187)]