19978767

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{1867}}^1$

素因数の和:1943

約数の個数: 24

約数和(自身を含む): 30597840

約数和(自身を除く): 10619073

約数列:

[1, 3, 9, 29, 41, 87, 123, 261, 369, 1189, 1867, 3567, 5601, 10701, 16803, 54143, 76547, 162429, 229641, 487287, 688923, 2219863, 6659589, 19978767]

約数ペア:

[(1, 19978767), (3, 6659589), (9, 2219863), (29, 688923), (41, 487287), (87, 229641), (123, 162429), (261, 76547), (369, 54143), (1189, 16803), (1867, 10701), (3567, 5601)]