20717751

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{389}}^1\times {\mathrm{433}}^1$

素因数の和:866

約数の個数: 16

約数和(自身を含む): 28435680

約数和(自身を除く): 7717929

約数列:

[1, 3, 41, 123, 389, 433, 1167, 1299, 15949, 17753, 47847, 53259, 168437, 505311, 6905917, 20717751]

約数ペア:

[(1, 20717751), (3, 6905917), (41, 505311), (123, 168437), (389, 53259), (433, 47847), (1167, 17753), (1299, 15949)]