19904889

素因数分解:

$3^1\times {\mathrm{59}}^1\times {\mathrm{107}}^1\times {\mathrm{1051}}^1$

素因数の和:1220

約数の個数: 16

約数和(自身を含む): 27267840

約数和(自身を除く): 7362951

約数列:

[1, 3, 59, 107, 177, 321, 1051, 3153, 6313, 18939, 62009, 112457, 186027, 337371, 6634963, 19904889]

約数ペア:

[(1, 19904889), (3, 6634963), (59, 337371), (107, 186027), (177, 112457), (321, 62009), (1051, 18939), (3153, 6313)]