20383881

素因数分解:

$3^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{7643}}^1$

素因数の和:7780

約数の個数: 16

約数和(自身を含む): 31309824

約数和(自身を除く): 10925943

約数列:

[1, 3, 7, 21, 127, 381, 889, 2667, 7643, 22929, 53501, 160503, 970661, 2911983, 6794627, 20383881]

約数ペア:

[(1, 20383881), (3, 6794627), (7, 2911983), (21, 970661), (127, 160503), (381, 53501), (889, 22929), (2667, 7643)]