20505903

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{27017}}^1$

素因数の和:27054

約数の個数: 16

約数和(自身を含む): 31124736

約数和(自身を除く): 10618833

約数列:

[1, 3, 11, 23, 33, 69, 253, 759, 27017, 81051, 297187, 621391, 891561, 1864173, 6835301, 20505903]

約数ペア:

[(1, 20505903), (3, 6835301), (11, 1864173), (23, 891561), (33, 621391), (69, 297187), (253, 81051), (759, 27017)]