20817921

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{4133}}^1$

素因数の和:4232

約数の個数: 16

約数和(自身を含む): 29367936

約数和(自身を除く): 8550015

約数列:

[1, 3, 23, 69, 73, 219, 1679, 4133, 5037, 12399, 95059, 285177, 301709, 905127, 6939307, 20817921]

約数ペア:

[(1, 20817921), (3, 6939307), (23, 905127), (69, 301709), (73, 285177), (219, 95059), (1679, 12399), (4133, 5037)]