20778818

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{313}}^1\times {\mathrm{1747}}^1$

素因数の和:2081

約数の個数: 16

約数和(自身を含む): 32932320

約数和(自身を除く): 12153502

約数列:

[1, 2, 19, 38, 313, 626, 1747, 3494, 5947, 11894, 33193, 66386, 546811, 1093622, 10389409, 20778818]

約数ペア:

[(1, 20778818), (2, 10389409), (19, 1093622), (38, 546811), (313, 66386), (626, 33193), (1747, 11894), (3494, 5947)]