65561805

素因数分解:

$3^4\times 5^1\times {\mathrm{161881}}^1$

素因数の和:161898

約数の個数: 20

約数和(自身を含む): 117526332

約数和(自身を除く): 51964527

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 161881, 485643, 809405, 1456929, 2428215, 4370787, 7284645, 13112361, 21853935, 65561805]

約数ペア:

[(1, 65561805), (3, 21853935), (5, 13112361), (9, 7284645), (15, 4370787), (27, 2428215), (45, 1456929), (81, 809405), (135, 485643), (405, 161881)]