20512665

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{19819}}^1$

素因数の和:19853

約数の個数: 24

約数和(自身を含む): 37103040

約数和(自身を除く): 16590375

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 207, 345, 1035, 19819, 59457, 99095, 178371, 297285, 455837, 891855, 1367511, 2279185, 4102533, 6837555, 20512665]

約数ペア:

[(1, 20512665), (3, 6837555), (5, 4102533), (9, 2279185), (15, 1367511), (23, 891855), (45, 455837), (69, 297285), (115, 178371), (207, 99095), (345, 59457), (1035, 19819)]