20857067

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{11777}}^1$

素因数の和:11818

約数の個数: 16

約数和(自身を含む): 27136512

約数和(自身を除く): 6279445

約数列:

[1, 7, 11, 23, 77, 161, 253, 1771, 11777, 82439, 129547, 270871, 906829, 1896097, 2979581, 20857067]

約数ペア:

[(1, 20857067), (7, 2979581), (11, 1896097), (23, 906829), (77, 270871), (161, 129547), (253, 82439), (1771, 11777)]