18663891

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{1987}}^1$

素因数の和:2122

約数の個数: 16

約数和(自身を含む): 25955328

約数和(自身を除く): 7291437

約数列:

[1, 3, 31, 93, 101, 303, 1987, 3131, 5961, 9393, 61597, 184791, 200687, 602061, 6221297, 18663891]

約数ペア:

[(1, 18663891), (3, 6221297), (31, 602061), (93, 200687), (101, 184791), (303, 61597), (1987, 9393), (3131, 5961)]